In regard to the Eden release, I keep getting a lot of weird freezing problems with 11 that I never saw with 10.
I had one happen last night when I went to watch a video. I left XBMC sitting in a folder, and I had a feeling it would mess up, because when I hit back, the usual sound effect didn't play. Once it hit the location window, XBMC froze up with no sources shown.
Sometimes, XBMC will freeze when I try to exit. This is annoying, because XBMC likes to stutter if you leave it on for extended periods, which means I need to close and reopen it to fix the problem.
I don't know if it's a weird settings conflict since I never deleted my settings when going between the Eden betas and release candidates.