I have this bug as well, since upgrading to lucid, using ATI (no more nvidia, yay), kernel 2.6.33, kde 4.4. However, for me, restartin kwin does not help at all - only restarting X.
-- Mouse events fail frequently and unpredictably, requiring kwin restart https://bugs.launchpad.net/bugs/505494 You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to kdebase-workspace in ubuntu. -- kubuntu-bugs mailing list kubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs