It's not set in offline mode. The only toolbar I saw was Live Search, which was installed by default with the browser.
The installed version is 8.0.6001.18702, but the problem was the same with Internet Explorer 6.
Any idea why the green and white banner "My Telltale - Unlock my game" appears only with Episodes 2 and 3, but not with the first? Also, 2 and 3 do not display a picture in the left part of the menu, Episode 1 does.