All right, after updating the kernel to 3.0.0-10 (from the updates) and applying Poul's workaround it works much better. Thank you very much.
Let's hope the kernel people find a permanent solution for this :) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/779753 Title: T400 laptop. Freezes or mouse stutters. Kworker process using too much CPU. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/779753/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
