You can try to upgrade to IE 7 and have a try.
A little busy,any one may help me touch the bugs:
First is for the Admin GUI.
With IE explorers,you may see the left menu tree as below,
and urls fail to respond.
For example,if you use the [server] to specify the virtual
server's default web module...
Other explorers as firefox is OK.
the Second is http-Service's default web-module config,
restart the server may cause the default web-module invalid.
You have to remove the default web module,and reload again.