Well, it is normal for IE8 to have multiple processes running, as the browser (just like Google Chrome) runs each tab in it's own process. The reason being if you have a tab that is not responding (crashed plugin, for example), you don't have to close the whole window. Personally, I would recommend Firefox or Chrome over IE8 any day.
As for the AVG....well, that's AVG for you (a resource hog). The only anti-virus I use and recommend is Avast
And the svchost is normal for Windows: What is svchost.exe And Why Is It Running?
What other programs have been crashing on you?
Can you do the following: Publish a Snapshot using Speccy