PSA: Blog Browser-Crashing Issues
If you remove the SiteMeter counter script, then it works fine. Apparently using Firefox also helps, but it doesn't help everyone else who is still running IE.
Or you can try some of the other fixes in the comments on this post. There are instructions for fixing the IE7 bug, and also for moving the SiteMeter script to a different part of your template so it won't cause problems.