I’ve been plagued by this for 9 months and I see that people on the MSDN and Usenet forums have it too.l

Sometimes, when accessing a word document (or other doc types) from a document library causes Internet Explorer to simply crash and go away (taking all the tabs with it if any are open).

This MS hotfix may solve it: http://support.microsoft.com/kb/938888

Also, there’s some description about the problem here:

http://jopx.blogspot.com/2007/07/solving-internet-explorer-crash-when.html