Secunia - Advisories - Microsoft Internet Explorer
Fer cryin' out loud, if you've got the option switch to Firefox. I understand about work compuers and admin passwords and if your local IT hefe wants to run the risk (or has to because you got some crap-ass tool that's IE-only) that's really his business.
But if you're running IE by choice, think about switching. It will make the internet a better place and if you use the link I've got up on top of my page I'll get a buckaroo.