With laptop docked, screen shows 1280x1024 resolution but acts like there's an invisible 1280x800 screen with another invisible 1280x224 screen below it (Ubuntu 7.10 beta)

My laptop's LCD screen has a 1280x800 resolution. I have a monitor on my desk at work that is connected to my laptop's docking station. In Feisty, this has always worked fine (minus a few icons on my panels moving around, even when "Locked to Panel" is checked).

In Ubuntu 7.10 beta (latest updates as of 0900 EDT, 04 Oct 07), when I dock my laptop and turn it on, my screen appears to adjust correctly. When I log in, the screen appears fine (minus a few of the bugs mentioned in this site). But when I move the desktop cube around, I can see where there is some confusion. You can see a sort of "ridge line" when moving the cube around, right at about the point where the laptop's original 1280x800 resolution would normally end. This wouldn't be so annoying normally, but my cube rotation looks like crap right now because of it.

Also, I have windows that have "edge attraction", and they continuously become attracted to this "invisible edge". That is probably the most annoying thing of all, because I can't position large windows in the middle of the screen. They just get sucked down into that virtual edge. I have an Intel 945GM graphics accelerator, 1 Gig of RAM, and compiz-fusion enabled.

I can also reply with a screenshot of this strange occurrence (I don't know how to attach my own files to this report).