I too suffered from the dreaded and dreadful experience of walking away from my laptop for a short moment, just long enough for the laptop to enter standby because I had it unplugged at the time, then when I got back and tried to resume it the mouse would move but I couldn’t type in my password or do anything else and clicking on the Switch user button just blanked the screen. I’d end up having to hard power off the laptop and lose anything I had been working on. I only had Vista installed for a couple weeks and was almost ready to toss it back out the window. I ended up searching the web for HOURS only to end up finding that not many people had found a successful solution. The most promising lead seemed to be a post listing a few hotfixes alledged to fix the issue. I checked through all of them and had run across a couple before but hadn’t been able to find them. The post listed a site to check for that offers hotfixes that Microsoft normally doesn’t give out other than through phone support. I grabbed these in a site for the “unofficial Vista SP1 (aka Service Pack). The ones that worked for me were [1] http://support.microsoft.com/kb/929909 and [2] http://support.microsoft.com/kb/928135. I have a Gateway CX210X tablet with an Intel 945 based chipset which clued me into the first item, and the second one sounded promising, one (or both) of them fixed it but I installed both at once so I’m not sure which was the magic bullet.