I.E. Causing Reboot?

[jsdoia]

At my company, we are running Windows N.T. Our employees use Internet Explorer 5 and Netscape 4.7 to access the Net. However, a few of our machines, when using I.E., will reboot themselves when going to certain sites. When going to the same sites using Netscape, everything seems fine. Then when using I.E. to go to the same sites, the machine will reboot itself. Does anyone know why, or has anyone else seen this? Any advice is greatly appreciated. Thanks.

-Jim