Http Keep-alive and Adobe IE plugin

I seem to be having a problem with my web app when I'm displaying a PDF file. In my web app I have a total of four frames that get generated. They are a header frame (contains my in web app links), Tools Frame (contains links that due things like delete documents ECT...), Index Frame (contains information about the document in question.), and Document Frame (this frame is the where the document would load with its viewer). I have a problem when the "Document Frame" is loading a PDF File and if the other frames haven't already been loaded (so in other words, any frame(s) not loaded before the Document frame will be affected) then they either load with garbage (when I say garbage I mean it's a mash of letters and numbers) or I get a white space. However, I have discovered that if I turn "http keep-alive" off on my web server this problem seems to go away. Has anybody ever heard of anything like this before with adobe or something similar? Thanks