Also, it is a good idea for everyone to have a copy of Process Explorer from MicroSoft.
It is a much enlarged version of Task Manager and will show you exactly what is going on in the background on your machine and will answer the type of questions you asked above. Have a play, and you will learn a lot. It opens up all those strange svchost entries which are usually showing up multiple entries and shows each service running.
Right at this moment, I have 12 instances of svchost.exe running in Task Manager and Process Explorer tells me that some of them have nearly 20 entries - well worth having.http://technet.microsoft.com/en-us/sysinte...s/bb896653.aspx