Fix: problems after installing IE's December cumulative update
As we know, there have been reports of some IE6 users running Windows XP SP2 having problems accessing web pages after installing the December IE Cumulative Update - IE stops responding.
The problem has apparently been restricted to some customised installations.
A Knowledgebase article has been released that discusses the problem, and the fix (modifying the registry).
http://support.microsoft.com/kb/946627