Replies

I had this very same problem and I posted it in the Microsoft Partner Support Forums. Another Microsoft partner commented he had the same issue and resolved it by going into the Internet Explorer Tools, Internet Options, Connections Tab, LAN Settings, and making sure the box is not checked for Automatically detect settings. I tried that and it worked. My clients have noticed a huge network performance increase even for non-Internet Explorer related programs. I hope this information helps. -Rich

Also of note a Microsoft tech responded by saying, “Internet Explorer supports a mechanism called Automatic Proxy Detection which implements the WPAD algorithm. This allows the browser to find a proxy server on the local network without any fixed configuration information on the client. Unfortunately, WPAD can be a very slow process, because it involves multiple network lookups, which may take a long time depending on the network configuration.

You may refer to the article below contains the section “Common Problems> Proxy Detection” maybe related to this specific issue.

“Unshackling IE8 Performance”
http://blogs.msdn.com/b/ieinternals/archive/2009/07/20/ie8-performance-and-speed-tips.aspx?wa=wsignin1.0