I have a daemon on for more than 2 weeks, working almost non-stop, here are some of the messages:
[Core] Block 735fd53c16f9de3304dc9651da92d0e176f1fdc63da9e2b0c7e6fbb8babebc8f added to main chain. Index: 804100
2017-Oct-27 13:46:58.960295 INFO [protocol] [213.57.177.6:29080 OUT] Sync data returned unknown top block: 804159 -> 862385 [58226 blocks (80 days) behind]
2017-Oct-27 13:46:58.960295 INFO [protocol] SYNCHRONIZATION started
2017-Oct-27 13:47:03.853651 INFO [Core] Block 2d1e47eaafeb5944227eb8e3fc04868c092e34128677e502d67d56d8317afa22 added to main chain. Index: 804200
2017-Oct-27 13:47:08.156743 INFO [protocol] [93.74.185.205:29080 OUT] Sync data returned unknown top block: 804259 -> 810326 [6067 blocks (8 days) behind]
2017-Oct-27 13:47:08.156743 INFO [protocol] SYNCHRONIZATION started
2017-Oct-27 13:47:14.745163 INFO [Core] Block 9b0dcb9b25ddfeced212bef06928230ffadd664a2896960468835fd25bbc897e added to main chain. Index: 804300
2017-Oct-27 13:47:21.835345 INFO [protocol] [91.224.140.213:19100 OUT] Sync data returned unknown top block: 804359 -> 862385 [58026 blocks (80 days) behind]
2017-Oct-27 13:47:21.835345 INFO [protocol] SYNCHRONIZATION started
2017-Oct-27 13:47:24.805916 INFO [Core] Block 56316849cc3eb89934a5b485ecc6f0a8e8fba7c3efb5042c4710cd236caf19ad added to main chain. Index: 804400
[Core] Block a6f14523462b2b751e502ba4895bab39e38b857484872e91b49879b0d60f1a74 added to main chain. Index: 820200
2017-Oct-27 14:08:09.376215 WARNING [node_server] [177.35.118.60:29080 OUT] error during write: TcpConnection::write, WSAGetOverlappedResult failed, result=10054, Удaлeнный xocт пpинyдитeльнo paзopвaл cyщecтвyющee пoдключeниe.
2017-Oct-29 17:13:11.171476 INFO [protocol] [176.31.124.129:29080 OUT] Tx verification failed
2017-Oct-29 17:16:40.267736 INFO [protocol] [92.155.73.162:29080 OUT] Sync data returned unknown top block: 826617 -> 863901 [37284 blocks (51 days) behind]
2017-Oct-29 17:16:40.267736 INFO [protocol] SYNCHRONIZATION started
2017-Oct-29 17:17:11.786105 INFO [protocol] [45.63.42.189:29080 OUT] Tx verification failed
2017-Nov-15 13:49:46.068168 INFO SYNCHRONIZATION started
2017-Nov-15 13:50:12.181630 INFO [169.1.148.246:29080 OUT] Sync data returned unknown top block: 838587 -> 876042 [37455 blocks (52 days) behind]
2017-Nov-15 13:50:12.181630 INFO SYNCHRONIZATION started
2017-Nov-15 13:52:07.743528 INFO [104.238.188.213:7610 OUT] Tx verification failed
2017-Nov-15 17:59:46.051993 INFO [94.130.35.245:29080 OUT] Sync data returned unknown top block: 838606 -> 838607 [1 blocks (0 days) behind]
2017-Nov-15 17:59:46.051993 INFO SYNCHRONIZATION started
2017-Nov-15 17:59:50.448784 INFO [94.130.35.245:29080 OUT] SYNCHRONIZED OK
2017-Nov-15 17:59:50.448784 INFO
2017-Nov-15 17:59:50.448784 INFO **********************************************************************
2017-Nov-15 17:59:50.448784 INFO You are now synchronized with the network. You may now start simplewallet.
2017-Nov-15 17:59:50.448784 INFO
2017-Nov-15 17:59:50.448784 INFO Please note, that the blockchain will be saved only after you quit the daemon with "exit" command or if you use "save" command.
2017-Nov-15 17:59:50.448784 INFO Otherwise, you will possibly need to synchronize the blockchain again.
2017-Nov-15 17:59:50.448784 INFO
2017-Nov-15 17:59:50.448784 INFO Use "help" command to see the list of available commands.
2017-Nov-15 17:59:50.448784 INFO **********************************************************************
2017-Nov-15 18:01:00.766812 INFO [91.113.0.59:29080 OUT] Sync data returned unknown top block: 838607 -> 876143 [37536 blocks (52 days) behind]
2017-Nov-15 18:01:00.766812 INFO SYNCHRONIZATION started
BUT wallet is empty:
Height 838607 of 838607
[wallet DB6nqu]: balance
2017-Nov-15 18:03:31.176387 INFO available balance: 0.000000000000, locked amount: 0.000000000000