Do you experience problems during downloading?
Check your connection in Status and Interface settings window.
Use Test Server in Config > Servers.
We will probably ask you to do a test using only basic settings.
Do you experience problems during repair or unpacking?
Enable +Debug logging in the Status and Interface settings window and share the relevant parts of the log here using [ code ] sections.
A few days ago everything worked fine but then I recognized, that sabnzbd wasn't running (ubuntu 12.04 server). I tried to restart the daemon on the running system without any luck. After three complete reboots sabnzbd came up. I couldn't make up why, because I didn't change a thing between the several reboots.
Sabnzbd kept running without any issue for another week and now I got the same problem. The deamon fails starting on boot and fails when starting manually. Here's what the terminal says after the attempt to start sabnzbd: