When I start Klear I have video and audio for about 2 seconds before the usage of the core goes to 100 % (its a dual core cpu) and Klear freezes. The problem appeared 2 or 3 days ago and is reproduceable always. A fresh klear.conf didn't help and I didn't do any updates on Klear before. I use Klear 0.6.1 on a Gentoo machine.
The bug is reported also here: https://bugs.launchpad.net/ubuntu/+source/klear/+bug/371223