I've noticed some odd formatting behavior in Netscape 7.1 when upgrading to MT 3.31. I was using 3.121 previously and didn't have any problems viewing my configuration pages and interface.
The pages display some of the listings on the far right of the page so you have to scroll to the right to view the Author or Weblog listings. Also there are no buttons for saving or rebuilding new or existing entries using the new interface.
This may be an issue with MT 3.2, but I noticed that this is not an issue in Firefox and IE.
I've switched over to Firefox for logging into my Movable Type interface and will use this for now.
I just wanted to point this out to the Six Apart group so they're aware of the issue and may be able to resolve these types of issues in future versions.