according to this post -http://ubuntuforums.org/showthread.php?t=189572&highlight=usb+freeze- it appears to be a problem with the Fujitsu-Siemens L1310G laptop as well.
-- after a random period of time i lose usb https://launchpad.net/bugs/53055 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
