I've been having that problem on and off ever since Max had to move the servers in to his home. It seems sporadic - I'd have thought if it was my browser settings it'd happen all the time. Anyway I've just now had a look at the settings on Internet Explorer under Internet Options/Privacy and told it to always allow mudcatorg, and I'll see if that makes any difference.

Not that it's much of a nuisance, only takes a few seconds. I suppose it might tempt people sometimes to come in a a GUEST instead and mess around, if that is what they are into.