教えてgoo

症状的にはこんな感じかなあ？
http://forums.cnet.com/5208-6620_102-0.html?forumID=14&threadID=217850&messageID=2319670

http://channel9.msdn.com/wiki/default.aspx/Channel9.InternetExplorerBugs

History Bug
Cached HTC Files Generate Unnecessary GET Requests
HTTP/1.1 Caching and passing content to external applications

あたりも気にはなる