I'm having this bug exactly as described. Hardware is Radeon HD5750. With fglrx 11-8, resume makes the computer completely unresponsive on the past few kernels in sid, but works every time on 2.6.32-5, albiet occasionally slowing to a crawl on resume by swapping like crazy until swapoff -a.
On linux 3.0.0-1 USB does not recieve power, the screens do not come on, but the fans spin up on resume. I have to reset the computer (using the convenient reset button).
