I have problems to connect my BSD wallet with the network. I am five days back and I let my wallet opened for six hours and contantly two active connections but I did not get it synchronized. Any advice what is wrong? It is not because of a firewall since I do not use one on my Mac and Bitsend worked earlier.
First: backup your wallet: "File -> Backup Wallet..."

Store that file safely in at least 2 locations...
Second: Close Bitsend client app (I assume you're using the Bitsend QT client version 0.14.0.4)
Third: Go to ~/Library/Application Support/Bitsend/ (that's where your wallet.dat file is stored) and find a file named "peers.dat". Rename it to "peers.old" and restart the client.
If you're comfortable with compiling your own wallet, better download the latest source at
https://github.com/LIMXTEC/BitSend/archive/v0.14.0.5.tar.gz , extract it and compile (see doc/build.osx file in the source)

Good luck.