Having the exact same problem. I also have a dual boot configuration. The thing is, I had already installed vista once and the drive failed. When I got a new drive I re-installed again and long story short had activation issues with vista. now, The whole time vista was running on the new drive, I had absolutely no issues. After dealing with MS the solution was to re-install again with a new product key. Now I'm having this issue. So I'm at a loss as to what the difference was between the second install and the last one. Anyway, I'd appreciate any advice on this.