Just logged on to check my mail and it wouldn't download as it said there was not enough space. Checked C drive and it's full although when I check all the folders in explorer they only add up to 20 GB of data. I've deleted temp files and internet files and got about 350 MB back. Question is, what's happened to the rest of my drive? Never came across this before so can anyone help me out/point me in the right direction?