I can't believe it. Even without the updates dapper is now showing the same symptoms. It's hopeless. My appologies for the multiple posts.
Sonic -- Mouse pointer freezes in Dell Dimension E521 / nForce 430 https://launchpad.net/bugs/67734 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs