IE6 freezes when using UDM 4.5? Help!

[uncouthmike]

Hi there, I have a UDM that seems to be working fine in Safari 3 (Mac) and Firefox 3 (Mac) but when I open it in IE6 (Win), Internet Explorer starts to load the menus (after drawing them really badly) and then FREEZES! It totally locks up.

Any suggestions? Naturally I'm supposed to launch this tomorrow :-/

http://newhope.mikecutter.com/get_involved-test.php

The only dropdown is on 'Get Involved'

The dropdown is in the wrong place on Safari 3 on Windows but I can live with that at this stage; crashing visitor's PCs, not so much :-)

Cheers,
Mike