I'm experiencing an issue with Fluxbox that causes it to lose keyboard input on switching workspaces. This has been fixed by the Fluxbox devs, but hasn't made it into the current package. See: http://git.fluxbox.org/fluxbox.git/commit/?id=58e09b719077605efadac9b712acb8f5e752f732 I'm running sid, but I suspect this issue would be fairly global. System is 3.11.0-12-generic x86_64.
I'll see if I can get a hotfix rolled out using that diff before we do another release upstream. Thanks! Cheers, Paul