This bug affects Autodesk VIZ 2007 (and possibly its older-sibling 3ds max 8 ) during registration when Internet Explorer 7 Beta is installed on the system. After Autodesk VIZ 2007 installs, the first time the user runs it it will complain that it cannot find a file in C:\Documents and Settings\User\Local Settings\Temp\~RT65.tmp\. The file in question was RTEaseReAuthBeginReg.html, or possibly a similar file. This file exists in C:\Program Files\Autodesk\VIZ2007\WebDepot. After copying the file to the ~RT65.tmp directory, VIZ will have IE7 open the file repeatedly. Every time, the Information Bar appears about potentially unsafe ActiveX content. Opening the file repeatedly causes more and more tabs to open.
The best potential fix is to remove IE7, and use IE6 instead.