After I'd finished installing all my programs on this new computer, I had a good 12 GB of free disk space. Over the last few weeks I've watched my free disk space steadily declining. Earlier this week it was 6 GB. Today, without downloading anything in the interim or installing any programs, I've been getting low disk space warnings of only 4 MEGAbytes free. What is going on??? This is a horrid bug. I think I might just wipe Vista away and install XP. Can I use the Vista license key on the bottom of this laptop to install XP? And will this laptop work with XP?