Disk space in Vista
yesterday I have downloaded kaspersky and started to scan my computer for threats, but faced a very strange situation where drive C has lost 12 GB disk space. so I uninstalled kaspersky but I could not recover this disk space. I have to know where the space is gone, I searched the web for an application to get the sizes of each folder in my HD, I found this application TreeSize Free which was recommended in this post
View folder size in Vista - Tech Support Forum
My last conclusion is that there is a folder of size 5 GB in the Windows folder c:\windows\tmp so I deleted the contents of this folder. and one last thing I did is to delete the windows restore points which freed up around 7 GB and I returned my lost 12 GB.