Do you have any other computers you might be able to test from? I presume you are using the latest Internet Explorer? 6.0.blahblahlbah...
I've tried from two different computers and it appears fine for me, maybe other individuals might take a look at this post and report back as well. I would say it might be a theme issue but I cannot seem to create the problem you are describing ;(. It's even more frustrating when you're trying to work on the site and you can't see everything correctly.
Just a suggestion you could always try reinstalling Internet Explorer:
support.microsoft.com/?kbid=318378
Although I don't know if this would solve your issue, as clearing the cache, cookies , temporary internet files might not solve it and potentially this might fix it? If you're living dangerously go for a reinstall, sometimes it's worked for me and othertimes it's gotten me into a lot more trouble than it's worth. Or if you are feeling really crazy I believe Internet Explorer 7.0 Beta 2 just came out two days ago and is available for download. You have to be pretty brave to install ie beta
In any case those are just my suggestions, normally clearing cache etc seems to solve most of my issues that I have, I personally have only reinstalled twice and it's a 50/50 shot. The frist time it worked great and fixed my issues, the second time I completely messed up my computer.
www.microsoft.com/windows/ie/ie6/using/howto/customizing/clearcache.mspx
Here's how to clear your cache etc.
Good Luck!
-Nick