This started with Windows update, it wouldn't even download, just gave me an error. I tried Safe Mode and no good, then back to normal mode and it worked! I was happy. Sp2 started installing and got through stages 1 and 2 then rebooted, got through stage 3 up to 100%, paused for a few minutes then said the service pack failed to install and it started undoing everything.
I've tried this a number of times over the past year since it was released and it has always failed. Just for disclosure's sake, I have OSX installed on another partition, but that was installed in June when the SP2 trouble started back in January, so it shouldn't be related.
This is my laptop's info:
Vista Home Prem x86, Core 2 Duo, 1.5 GHz, GeForce 8600M GS, 2GB RAM