Problems with "SVCHOST.EXE"

Hello.
Ive got a small problem.
About 3mins after login, my computer gets very slow and un reactive, and my computer makes a hard drive (searching sound), this lasts for 3mins. I have found the cause of the process which is causing this, it is the "SVCHOST.EXE".
Any help?
James
Ive got a small problem.
About 3mins after login, my computer gets very slow and un reactive, and my computer makes a hard drive (searching sound), this lasts for 3mins. I have found the cause of the process which is causing this, it is the "SVCHOST.EXE".
Any help?
James