Hi,
Sad to hear that you have problems with it, my first guess would be that this has something todo with the browser history/bookmark management. (That makes it possible to use the browsers forward and back buttons without leaving the page).
I'm currently refactoring this part of the app to be abstracted behind the regular events fired in the app, hopefully this will solve the problem.
I'll make sure to test in IE7 a couple of extra times before I commit.
Fix/refactor will be on trunk in a couple of days 🙂
Cheers,
:: Erik