I have the same problem with my microsoft trackball optical mouse. It works on startup but will then die. Unplug and replug seem to fix it for a short while.
I am running Edgy Beta1 AMD64 x2 2.6.17-10-generic Kernel Nvidia Beta driver.. had the same problem with this kernel and nv and nvidia-glx drivers. I am on a New Dell Dimension E521 so no touchpad as mentioned in the other bug report. Keyboard failed for the first time while writing this bug report...included dmesg ** Attachment added: "Syslog report for mouse and keyboard failures" http://librarian.launchpad.net/4888952/syslog -- USB dies on recent kernel (nvidia-hardware) https://launchpad.net/bugs/59559 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs