IE and Mozilla troubles

I have been trying for quite a long time now and I just didn’t find out what mistake I did.

I am using the Connections Theme as base but have been modificating quite a few things.

Something that is really driving me nuts is that fact that my footer and the background image are 1 pixel too much left in IE – looks fine in Mozilla thought. Tried to change the images themself but that didn’t help..

Any ideas? I somehow think that is a common problem but I had no luck while searching the database here.

Thanks in advance, again 🙂