This is my first post and I'd like to introduce myself. It looks like this is a great forum with great advice and i hope to learn and prosper form all that is here. I love playing around with my photoshop elements program (and yes I do need to get a newer version

) but it has always worked fine until now.
My problem may be something due to some spyware I've picked up, or an incapatability with my most recent Vista updates. But I am trying to work on a pic of my 9 month old son (yes he is precious

) and I was trying to use the magnetic lasso. The problem is, when I get about half of the image traced the picture seems to refresh and I lose what has been traced. Instead it seems to just pick random pixels around the area I have tried to trace. Is there any known issues with this and vista recently? I've never had this problem before.
Thanks to any advice in advance.