It seems to be related to desktop effects, and affecting others as well, as per this thread: http://ubuntuforums.org/showthread.php?t=1062571
I was able to disable them and now kwin doesn't freeze on startup.
It seems to be related to desktop effects, and affecting others as well, as per this thread: http:// ubuntuforums. org/showthread. php?t=1062571
I was able to disable them and now kwin doesn't freeze on startup.