Make sure that these are messages you are EXPECTING. Do not open, view, preview UNSOLICITED EMAIL.
After that, use http://www.google.com to look up IEFIX which may cure it if your machine is free of PARASITES.
Very often lately, when I click on a link in OE, nothing happens and the whole computer freezes up. I have to do a ctrl/alt/delete and reboot to get things going again. This is happening about every hour of of online work.
My Desktop System:
Compaq Presario 4420CA Desktop
Internet Explorer 6.0.2600
Outlook Express 6.0.2600
ISP: earthlink.net (2-way satellite internet)
MS Office 2000 Small Business
Microsoft Trackball Optical 1.0 PS2/USB