I use Windows 7 x86 for quite some time. I noticed one thing: sometimes is just starting to access the HDD for minutes, slowing down other disk operations. It's not a virus. It's not a hardware problem. I deactivated Restore, Superfetch, Indexing, Windows defender (the scheduled scan) and Scheduled defragmentation. I installed clean, without other programs. Still no change... On the same computer I have another partition with Windows XP x86. Each primary partition is hidden when the computer is booting from the other one. In Windows XP I don't have this problem, even with installed programs. I saw it happening on other computers too. In Vista is worst... Does anybody has an idea which service/process from Windows 7 is doing this, why and how to stop it (safely)...?