It seems that the problem is related to unresponsive samba shares: If a mounted samba share becomes unreachable (because the remote machine was shut down, or the network connection failed) the problem begins.
After umointing the unresponsive share (sudo umount --force /path) KDE responds immediately to mouse clicks. -- Very slow response to mouse clicks by the KDE desktop. https://bugs.launchpad.net/bugs/346021 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs