Thanks, I don't think it's the boot logo though, it's after the boot logo's loading bar... I get the neptune blue background color for a little... loading personal settings, then this tiled picture, and then my actual background loads.
It also appears during shutdown. It's almost like it's something underneath both the background color and picture.
Is it a remnant after one of my friends changed the background?
[EDIT] Nevermind, found it... appears that my friend used the IE set background, I changed it back... but between active desktop and the background tab, I guess it conflicted. Problem was solved by resetting active desktop to a blank color.