Same problem at ASUS A6R-B002. I have problems with shutdown (but not always). USB works good for about 20 min and after that - stops responding. Reboot is needed. That's very frustrating.
-- [FGLRX] kernel drivers kills USB subsystem https://launchpad.net/bugs/41272 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs