Posted by VK on 11/17/07 16:38

Accidentally I have read this thread and I noticed that the KB article
I linked in "Active time for HTTP connection" thread may be giving
another possible hint:

http://support.microsoft.com/kb/813827

"If you set the KeepAliveTimeout value to less than 60,000 (one
minute), you may have problems communicating with Web servers that
require persistent HTTP connections. For example, you may receive a
"Page cannot be displayed" error message."

It may be possible that some visitors have KeepAliveTimeout manually
set to too short, or that for some requests the inactivity period goes
beyond the default allowed 60,000ms

I cannot reproduce your problem neither in IE6 nor IE7 so just
guessing. If you have a machine stable reproducing the problem, then I
would check one by one:
1) HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion
\InternetSettings
Try to set KeepAliveTimeout DWORD value to 180000 and add new key
ServerInfoTimeout with DWORD value to 180000

2) Tools :: Internet Options :: Advanced :: HTTP 1.1 settings :: check
on "Use HTTP 1.1 through proxy connections"
(default is off)

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