[atlas]warning pop-up in IE for the various atlas-related pages

Folks, I noticed that I have to ack a warning pop-up (served by IE7 ;-) ) for each page that is realted to the atlas stuff. IE complains about a mix of secured and unsecured components on the page. In principle I'd prefer continuing with httpS, but the warnings are a real nuisance. Anyone else seeing this? Btw, the Labs stuff shows the same behaviour. Wilfried.