Comment 3 for bug 776560

That happens in ie7 but not ie8.

It is indeed coming from the img#login-gradient element. I poked around a little bit, and it seems that just changing the width in ie7 causes it to add that white area around it. The strange part is that it works fine on the 404 page, but not the login page, and those 2 pages are similar. I'll keeping digging to see if I can find what's causing it.