I am using a hidden wifi network. Some times when starting my laptop it doesn't automatically connect to this network and I have to connect manually.
OwnCloud Client 1.4.1 RC 2 starts automatically but because there is no network connection it failes to execute properly. When opening the client / settings it states: "Host not found".
The client doesn't recover from this error: I have to stop and start the client or go through 'modify account'.
The client should be aware of changes in the network stack and act accordingly.
Hope this helps to improve the client!