Not to create another thread...
I've used CB for quite some time now on Ubuntu 12.10 (the repository version which is v10) but after I ticked the contrib package in software center, CB stopped working. I tried everything - ticking and unticking all the packages, installing, uninstalling, adding a different source (which doesn't seem to affect software center, it still installs v10 for some reason), when I click the CB icon it just flashes for a few seconds and nothing happens. There is no lingering process in the background, no error, nothing. I am a Linux newbie which prevents me from doing more thorough wiping or whatever, so I'm out of ideas.
Any help appreciated!