usb problems after recent updates

Hi, I'm running FC4 on a laptop been experiencing usb problems since the last round of FC4 updates. Basically the symptoms are that if I plug in my usb mouse, which has worked find up to this point, the system goes into a cycle of 100% cpu usage for a few seconds, which then stops for a period and then restarts. The mouse does not work (It might for a few seconds but then stops). Thankfully the touchpad works OK... Does anyone else have this problem ? Any suggestions what to do would be greatfully received as this is rather annoying. -- +--------------------------------------------------------------+ | Dr Chris R Jones work : +44 (0)1223 337324 | | HEP Group (rm 882) fax : +44 (0)1223 353920 | | Cavendish Laboratory, home : +44 (0)1223 510711 | | Madingley Road, mobile : +44 (0)7900 564763 | | Cambridge, CB3 0HE email : jonesc(a)hep.phy.cam.ac.uk | +--------------------------------------------------------------+