I am using windows 7 64bit, 500GB HDD, in which 100GB is for Local Disk (C). My C: drive is getting heaver day by day. I have turned off automatic update for windows & other installed softwares, still it's getting full. Each time I check the free space it's lesser than previous. Now I have uninstalled some softwares from C: drive & amazingly the free space got lowered. I don't know why this is happening, please help...