I can confirm that this bug also affects my system. My system is an off the shelf System76 "Bonobo Extreme" laptop running Ubuntu 12.10 with the latest updates. Consistent with the other reports, this laptop has USB3 ports.
$ uname -a
Linux bigbrick 3.5.0-23-generic #35-Ubuntu SMP Thu Jan 24 13:15:40 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
I can confirm that this bug also affects my system. My system is an off the shelf System76 "Bonobo Extreme" laptop running Ubuntu 12.10 with the latest updates. Consistent with the other reports, this laptop has USB3 ports.
$ uname -a
Linux bigbrick 3.5.0-23-generic #35-Ubuntu SMP Thu Jan 24 13:15:40 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux