No problem for me either with IE7. Working fine since I downloaded it about a week ago. Takes a little getting used to, but I like IE7 better then IE6. More streamlined with a nicer look I think.

Muckshifter, i think you already established that you could log in with the secure....org site added to the trusted list, but could not post. Unticking the secure certificate checking allowed you to post, thus i think its safe to assume that its IE7 or "IE7+" as MSFT likes to call it on Vista, which is proclaimed as bringing on extra security features over the XP version like parental control. I know that i get warnings when a page has mixed save and unsave attributes when on a https site, so given its beta still it remains to be a writing to be done to the Chief Software Architect @ MS .