Windows Vista shutdown problem

[SKREECH]

I have Windows Vista, when i press shut down button Shutting down takes 15-20 minutes! and I rarely have anything installed in my pc ! my pc is fully protected with symantec antivirus.
any idea ?

Thanks in advance.

[Solomon]

Maybe your system was installing some updates or a process froze. I have
Vista Ultimate on two PC's and they shutdown within a minute unless there
are updates.

[Devasis]

I Suggest you to clearing out all the Temp/Tmp folders, clearing the browser temporary files ,doing a Disk CleanUp. and run disk check.

[Lillebror]

You probably have malware or other malicious programs on your PC which is slowing it down. You probably have a program that is starting itself when the PC starts and is causing trouble when it's shut down.