"Yet another IE Quirk" comes to mind... I really hope that if we roll out another IE specific "fix" that we use tags that target ONLY that, vs forcing all browsers to have to target the same "look"...
EX:
<!--[if IE]>
<link rel="stylesheet" href="/forums/styles/ieisretarded.css?v=7.5" type="text/css" />
<![endif]-->