New IE knowledgebase articles...
Just catching up on the paperwork here...
IE6 and IE7: Proxy server settings are not set correctly in IE6 afer you download a proxy script that uses chunk encoding
Install IE update MS07-069 then enable the fix by editing the registry
http://support.microsoft.com/default.aspx/kb/843289
----------
MS07-069: Cumulative security update for Internet Explorer
http://support.microsoft.com/default.aspx/kb/942615
---------
Some customized security settings for the Trusted sites zone in Internet Explorer 7 are reset to the default values on a Windows Vista-based computer
On a Windows Vista-based computer, you customize the following security settings for the Trusted sites zone in Windows Internet Explorer 7:
• Automatic Prompting for ActiveX controls
• Download signed ActiveX controls
• Automatic prompting for file downloads
• Allow Script-initiated windows without size or position constraints
However, after you install Internet Explorer cumulative security update 931768 (MS07-027) or security update 933566 (MS07-033), the security settings are reset to the default values.
Fix: Install the December update MS07-069.
http://support.microsoft.com/default.aspx/kb/943141