Weird problem with the photoshop hand tool : Adobe Photoshop

This is a discussion on Weird problem with the photoshop hand tool within the Adobe Photoshop forums in Adobe Tools category; I just upgraded to vista and have been using CS4 for a while now and I noticed that sometime when I'm dragging myself around the image in Photoshop a thin grey frame appears and instead of it letting me drag myself around when I release the mouse button it just jumps me to a random part of the image. Sometimes it even zooms me out. It's hard to explain, but if it's happened to you, you'd understand. So basically I was wondering how to fix it and if anyone else has been experiencing this problem....