So I started Armory and got the expected behaviour as before. After 20 minuts I closed Armory through "File->Close Armory". The ArmoryDB kept runing so I closed that over the systemmonitor.
armorylog.txt
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1138 - C++ block utilities loaded successfully
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:665 - Executing popen: free -m
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:665 - Executing popen: ['cat', '/proc/cpuinfo']
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1255 -
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1256 -
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1257 -
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1258 - ************************************************************
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1259 - Invoked: /usr/local/bin/../lib/armory/ArmoryQt.py
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1260 - ************************************************************
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1261 - Loading Armory Engine:
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1262 - Armory Version : 0.96
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1263 - Armory Build: : a3d01aa722
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1264 - PyBtcWallet Version : 1.35
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1265 - Detected Operating system: Linux
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1266 - OS Variant : Ubuntu-16.04-xenial
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1267 - User home-directory : /home/spieler
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1268 - Satoshi BTC directory : /home/spieler/.bitcoin/
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1269 - Armory home dir : /home/spieler/.armory/
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1270 - Detected System Specs :
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1271 - Total Available RAM : 15.63 GB
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1272 - CPU ID string : Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1273 - Number of CPU cores : 4 cores
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1274 - System is 64-bit : True
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1275 - Preferred Encoding : UTF-8
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1276 - Machine Arch : x86_64
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1277 - Available HDD (ARM) : 390 GB
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1278 - Available HDD (BTC) : 390 GB
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1279 -
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1280 - Network Name: Main Network
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1281 - Satoshi Port: 8333
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1282 - Do wlt check: True
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1283 - Named options/arguments to armoryengine.py:
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - thread_count : -1
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - rescan : False
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - ignoreAllZC : False
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - rescanBalance : False
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - disableModules : False
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - port : None
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - interport : 8223
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - coverageOutputDir: None
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - forceWalletCheck: False
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - regtest : False
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - rebuild : False
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - nettimeout : 2
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - datadir : DEFAULT
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - clearMempool : False
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - offline : False
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - armoryDBDir : DEFAULT
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - armorydb_port : 9001
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - satoshiPort : DEFAULT
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - useTorSettings : False
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - netlog : False
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - keypool : 100
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - coverageInclude : None
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - forceOnline : False
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - redownload : False
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - rpcBindAddr : 127.0.0.1
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - armorydb_ip : 127.0.0.1
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - multisigFile : DEFAULT
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - ram_usage : -1
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - mtdebug : False
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - logDisable : False
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - settingsPath : /home/spieler/.armory/ArmorySettings.txt
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - language : en
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - db_type : DB_FULL
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - doDebug : False
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - enableDetSign : True
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - disableConfPermis: False
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - testnet : False
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - rpcport : DEFAULT
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - satoshiHome : DEFAULT
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - satoshiRpcport : DEFAULT
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - logFile : /home/spieler/.armory/ArmoryQt.py.log.txt
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1285 - verbosity : None
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1286 - Other arguments:
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1289 - ************************************************************
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:1692 - C++ block utilities loaded successfully
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:3590 - Using settings file: /home/spieler/.armory/ArmorySettings.txt
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:3750 - Using Language: de
2017-05-11 13:41 (INFO) -- BDM.py:368 - Using the asynchronous/multi-threaded BlockDataManager.
2017-05-11 13:41 (INFO) -- BDM.py:369 - Blockchain operations will happen in the background.
2017-05-11 13:41 (INFO) -- BDM.py:370 - Devs: check TheBDM.getState() before asking for data.
2017-05-11 13:41 (INFO) -- BDM.py:371 - Registering addresses during rescans will queue them for
2017-05-11 13:41 (INFO) -- BDM.py:372 - inclusion after the current scan is completed.
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:3590 - Using settings file: /home/spieler/.armory/ArmorySettings.txt
2017-05-11 13:41 (INFO) -- ArmoryQt.py:2042 - loadWalletsAndSettings
2017-05-11 13:41 (INFO) -- ArmoryQt.py:2102 - Loading wallets...
2017-05-11 13:41 (INFO) -- ArmoryQt.py:2167 - Number of wallets read in: 2
2017-05-11 13:41 (INFO) -- ArmoryQt.py:2172 - Wallet (BbxgbkBH): "Primary Wallet " (Encrypted)
2017-05-11 13:41 (INFO) -- ArmoryQt.py:2172 - Wallet (bQ6dchyR): "Cold Storage (Watch) " (No Encryption)
2017-05-11 13:41 (INFO) -- ArmoryQt.py:2177 - Loading Multisig Lockboxes
2017-05-11 13:41 (INFO) -- ArmoryQt.py:1747 - acquiring process mutex...
2017-05-11 13:41 (INFO) -- ArmoryQt.py:1385 - setupUriRegistration
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:665 - Executing popen: gconftool-2 --get /desktop/gnome/url-handlers/bitcoin/command
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:665 - Executing popen: xdg-mime query default x-scheme-handler/bitcoin
2017-05-11 13:41 (INFO) -- ArmoryQt.py:558 - Usermode: Expert
2017-05-11 13:41 (INFO) -- ArmoryQt.py:1681 - Changing usermode:
2017-05-11 13:41 (INFO) -- ArmoryQt.py:1682 - From: Expert
2017-05-11 13:41 (INFO) -- ArmoryQt.py:1690 - To: Expert
2017-05-11 13:41 (INFO) -- ArmoryQt.py:1814 - startBitcoindIfNecessary
2017-05-11 13:41 (INFO) -- ArmoryQt.py:1850 - setSatoshiPaths
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:665 - Executing popen: ['whereis', 'bitcoind']
2017-05-11 13:41 (INFO) -- SDM.py:289 - "whereis" returned: ['/usr/bin/bitcoind']
2017-05-11 13:41 (INFO) -- SDM.py:169 - Found bitcoind in the following places:
2017-05-11 13:41 (INFO) -- SDM.py:171 - /usr/bin/bitcoind
2017-05-11 13:41 (INFO) -- SDM.py:171 - /usr/bin/bitcoind
2017-05-11 13:41 (INFO) -- SDM.py:173 - Using: /usr/bin/bitcoind
2017-05-11 13:41 (INFO) -- SDM.py:337 - Called startBitcoind
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:665 - Executing popen: ['/usr/bin/bitcoind', '-datadir=/home/spieler/.bitcoin/']
2017-05-11 13:41 (INFO) -- SDM.py:443 - PID of bitcoind: 3084
2017-05-11 13:41 (INFO) -- SDM.py:444 - PID of armory: 2904
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:665 - Executing popen: ['python', '/usr/local/lib/armory/guardian.py', '2904', '3084']
2017-05-11 13:41 (INFO) -- ArmoryQt.py:1850 - setSatoshiPaths
2017-05-11 13:41 (WARNING) -- SDM.py:396 - Spawning DB with command:ArmoryDB --db-type="DB_FULL" --cookie --satoshi-datadir="/home/spieler/.bitcoin/blocks" --datadir="/home/spieler/.armory/" --dbdir="/home/spieler/.armory/databases"
2017-05-11 13:41 (INFO) -- ArmoryUtils.py:665 - Executing popen: ['ArmoryDB', '--db-type="DB_FULL"', '--cookie', '--satoshi-datadir="/home/spieler/.bitcoin/blocks"', '--datadir="/home/spieler/.armory/"', '--dbdir="/home/spieler/.armory/databases"']
2017-05-11 13:41 (INFO) -- ArmoryQt.py:1900 - Setting netmode: 1
2017-05-11 13:41 (INFO) -- ArmoryQt.py:1900 - Setting netmode: 0
2017-05-11 13:41 (INFO) -- ArmoryQt.py:1882 - loadBlockchainIfNecessary
2017-05-11 13:41 (INFO) -- ArmoryQt.py:4619 - Dashboard switched to "Scanning" mode
2017-05-11 13:41 (INFO) -- ArmoryQt.py:4619 - Dashboard switched to "Scanning" mode
2017-05-11 14:02 (INFO) -- ArmoryQt.py:5400 - BDM is safe for clean shutdown
2017-05-11 14:02 (INFO) -- SDM.py:457 - Called stopBitcoind
2017-05-11 14:02 (INFO) -- ArmoryQt.py:5414 - Attempting to close the main window!
dblog.txt
Log file opened at 1494502918: /home/spieler/.armory/dbLog.txt
-INFO - 1494502918: (main.cpp:23) Running on 4 threads
-INFO - 1494502918: (main.cpp:24) Ram usage level: 4
-INFO - 1494502918: (BlockUtils.cpp:907) blkfile dir: /home/spieler/.bitcoin/blocks
-INFO - 1494502918: (BlockUtils.cpp:908) lmdb dir: /home/spieler/.armory/databases
-INFO - 1494502918: (lmdb_wrapper.cpp:388) Opening databases...
-INFO - 1494502918: (BlockUtils.cpp:1091) Executing: doInitialSyncOnLoad
-INFO - 1494502918: (DatabaseBuilder.cpp:169) Reading headers from db
-INFO - 1494502986: (DatabaseBuilder.cpp:208) Found 465700 headers in db
-INFO - 1494502987: (DatabaseBuilder.cpp:51) updating HEADERS db
-INFO - 1494502995: (DatabaseBuilder.cpp:477) Found next block after skipping 510159bytes
-INFO - 1494502996: (DatabaseBuilder.cpp:268) parsed block file #864
-DEBUG - 1494502996: (Blockchain.cpp:242) Organizing chain
-INFO - 1494502996: (DatabaseBuilder.cpp:56) updated HEADERS db in 1.81831s
-INFO - 1494502996: (DatabaseBuilder.cpp:106) scanning new blocks from #465696 to #465695
-INFO - 1494502996: (BlockchainScanner.cpp:52) no history to scan
-INFO - 1494502996: (BlockchainScanner.cpp:813) no SSH to scan
-INFO - 1494502996: (DatabaseBuilder.cpp:156) scanned new blocks in 0.001696s
-INFO - 1494502996: (DatabaseBuilder.cpp:160) init db in 7.59904s
-INFO - 1494502996: (BlockUtils.cpp:1206) Enabling zero-conf tracking
-INFO - 1494503070: (BitcoinP2P.cpp:947) Connected to Bitcoin node
-WARN - 1494503542: (BDM_supportClasses.cpp:1891) running 10 zc parser threads
-WARN - 1494503542: (BDM_supportClasses.cpp:1891) running 15 zc parser threads
-WARN - 1494503542: (BDM_supportClasses.cpp:1891) running 20 zc parser threads
-WARN - 1494503542: (BDM_supportClasses.cpp:1891) running 25 zc parser threads
-WARN - 1494503542: (BDM_supportClasses.cpp:1891) running 30 zc parser threads
-WARN - 1494503542: (BDM_supportClasses.cpp:1891) running 35 zc parser threads
-WARN - 1494503542: (BDM_supportClasses.cpp:1891) running 40 zc parser threads
-WARN - 1494503542: (BDM_supportClasses.cpp:1891) running 45 zc parser threads
-WARN - 1494503564: (BDM_supportClasses.cpp:1891) running 50 zc parser threads
-WARN - 1494503564: (BDM_supportClasses.cpp:1891) running 55 zc parser threads
-WARN - 1494503564: (BDM_supportClasses.cpp:1891) running 60 zc parser threads
-WARN - 1494503564: (BDM_supportClasses.cpp:1891) running 65 zc parser threads
-WARN - 1494503564: (BDM_supportClasses.cpp:1891) running 70 zc parser threads
-WARN - 1494503564: (BDM_supportClasses.cpp:1891) running 75 zc parser threads
-WARN - 1494503564: (BDM_supportClasses.cpp:1891) running 80 zc parser threads
-WARN - 1494503564: (BDM_supportClasses.cpp:1891) running 85 zc parser threads
-WARN - 1494503614: (BDM_supportClasses.cpp:1891) running 90 zc parser threads
-WARN - 1494503614: (BDM_supportClasses.cpp:1891) running 95 zc parser threads
-WARN - 1494503614: (BDM_supportClasses.cpp:1891) running 100 zc parser threads
-WARN - 1494503614: (BDM_supportClasses.cpp:1891) running 105 zc parser threads
-WARN - 1494503616: (BDM_supportClasses.cpp:1891) running 110 zc parser threads
-WARN - 1494503616: (BDM_supportClasses.cpp:1891) running 115 zc parser threads
-WARN - 1494503616: (BDM_supportClasses.cpp:1891) running 120 zc parser threads
-WARN - 1494503616: (BDM_supportClasses.cpp:1891) running 125 zc parser threads
-WARN - 1494503616: (BDM_supportClasses.cpp:1891) running 130 zc parser threads
-WARN - 1494503616: (BDM_supportClasses.cpp:1891) running 135 zc parser threads
-WARN - 1494503616: (BDM_supportClasses.cpp:1891) running 140 zc parser threads
-INFO - 1494504153: (nodeRPC.cpp:368) Bitcoin server stopping
-INFO - 1494504153: (SocketObject.cpp:350) POLLIN recv return 0
-ERROR - 1494504153: (BitcoinP2P.cpp:1037) caught StopBlockingLoop in processDataStackThread
-INFO - 1494504153: (BitcoinP2P.cpp:969) Disconnected from Bitcoin node