Even as I'm writing this post, there is a bug on StackOverflow which prevents me from continuing. That is, I must open up a text editor on my computer, then cut this text and paste it into the text editor in order to continue writing.
The reason is that the informational sidebar which (is suppose to) appear to the right side of this text area, actually covers the entire right third of the text area. So I cannot see that part of what I'm typing!
There are a handful of websites on which I have similiar layout issues, I think it's because of the less common screen resolution and/or DPI settings that I use -- 1680 by 1050 pixels and 125% normal size (120 dpi). StackOverflow is the only website with this issue that I use regularly.
So I would be very happy if you could address it. Here's a screen shot - Note that this issue occurs only in Firefox -- I'm running the latest version which is 3.5.3: