Can anyone shed any light on a problem I looked at over the weekend? The guy tells me that he went out in the morning and his computer was working fine, using about a quarter of the hard drive space (160GB) when he came home his computer was very slow and his drivehad only 2GB of space. Noone had used it during the day as he lives on his own. We have run Mcafee, Malwarebytes, Combofix and Ccleaner and cleaned out some stuff but nothing much. I checked all his files and directories and the evidence suggests that there is only about 30 - 40GB on the drive so what is filling it up? I unhid all the files before I checked what was on the drive incase something was hidden. I ran diagnostics on memory and drive and everything seems to be fine, I have fixed it by formatting and reloaded the software, although I boticed that the format seemed to take much longer than I expected. Have any of you guys experienced anything like this or have an idea what was filling the drive because it had me beat.