Sorry I took this long to get back, had a million and one things going on in real life.
I was lucky and skipped the 1.2 and went to the 1.4 w/ SSE before upgrading to my current system so I never had to go through this.
I can't see the USB drivers being the issue, but I've had a lot of issues with random stuff like that, so I'd give it a shot. Otherwise start trawling around the internet for ideas and keep newegg
in the back of your mind....
Sorry I can't offer anything more than that.
If I think of something I'll try to get it to you ASAP unless the issue is resolved by then.