FYI: Users of Fedora 18+ that have a Radeon HD video card which uses the r600g
driver may have experienced kwin crashes  at log in. These were caused by a
newly added feature "msaa visuals" in Mesa-9.1 . Fredrik Höglund (kwin
developer) created a patch  that solved this issue for kde. If mesa
upstream will do something in this respect is unclear to me.
I've tested the patch against kde-workspace-4.10.2-4.fc18.src.rpm and it
It would be nice if a next build of kde-workspace could incorporate the patch.
I hope this request is not too obtrusive.