EdB, you hijacked this thread that has
nothing to do with your problem. You can certainly cathegorize hundreds of issues as "display problem", but if you read the original few posts, you'll find out that it's certainly completely different. In that case, it's recommended to open your own thread with the question, of course.
Anyway, I've given you all the suggestions available. The problem is caused by an IE components (i.e. it's not an avast! bug), so there isn't much we can do about it.
You can manually turn off the Simple UI help popup by modifying the <avast4>\Data\avast4.ini file;
here are the exact values.
Oh, and nobody was posting using your account, of course - the quoted parts are done using the "quote" button, so that people know what exactly is the response related to.