Knowledge base articles - IE6
HOTFIX: When you browse from one Web site to a different Web site in IE6 on a Windows XP based computer, IE6 crashes
This problem occurs because of an access violation in the Mshtml.dll file. The access violation is caused by an error in the update that is described in the Microsoft Knowledge Base 929874 article. The KB929874 update is included in the KB933566 Cumulative Security Update (MS07-033) and in the KB937143 Cumulative Security Update (MS07-045).
http://support.microsoft.com/default.aspx?/kb/940072
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HOTFIX: On a Windows XP SP2 based computer that has certain cumulative security updates for IE installed, IE6 may stop responding when you try to visit a Web site
On a Windows XP Service Pack 2 (SP2)-based computer, Internet Explorer 6 may stop responding when you try to visit a Web site.
This issue may occur after you install certain cumulative security updates for Internet Explorer. These security updates include security update 928090 (security bulletin MS07-016), security update 931768 (security bulletin MS07-027), and security update 933566 (security bulletin MS07-033).
http://support.microsoft.com/default.aspx/kb/942367