The automatic feeds on the "my stuff/feeds" areas give an error about cookies and being logged in after subscribing in IE7.
The feeds you make yourself aren't dynamic and thus use no login security (fixes the cookie problem, but raises a security one). They also can't be deleted once created and an error occurs when you try to turn off "active".
And none of the RSS feeds add header text to the forum pages for browser auto-discovery.
Also, the look of the RSS feeds for the my stuff ones and the manually created ones are different. One is formatted like normal posts, and the other appears to be filtered into plain text (no images, emoticons, or font colors).
