it sounds like you have some spyware manipulating the windows that are coming up. you need to scan for spyware and remove it. start with Ad Aware.
Herb...
Every time I open up a new browser or click on a link, the new browser that opens up is in a minimized form of a 1x1 box. I have to manually maximize all new browser windows. Started about a week ago. first started with window opening up halfway and off the screen.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic