Hi, Sorry in taking so long to track this down. I just got motivated today. I have a VIA SMP system and somewhere between 2.6.12-rc3 and 2.6.12 the USB mouse started moving around really slowly. Anyway, it turns out that the attached patch (against 2.6.13-rc3-git8) fixes the problem. Let me know if any info is needed or if you would like me to test a patch. This is a regression versus 2.6.11 so it would be good to have a fix in 2.6.13. Thanks, Nick -- SUSE Labs, Novell Inc.