This started today.  I've been using Windows Live Mail for several years on the same computer.  The program opens, email is downloaded. I can open an email, maybe two, before it freezes.  It can't even be closed with Task Manager.  I have to reboot the computer.  I have uninstalled & reinstalled several times.  I've turned off the Norton email virus scan (temporarily) to see if it's interfering in some way, but that didn't make a difference.  I've cleaned the registry.

How do I get WLM to work properly?  Thanks for the help.