Certain pages are designed to reload when the browser window is resized in order to render page elements properly. I have seen browser plugins such as Firebug for Firefox cause this sort of behavior in certain situations, because the plugin effectively resized the page viewport immediately after the page loaded, but can't think of any reason why it would be experienced on any browser on any computer. Which OS platforms and browser versions have you tried?
windows 7
firefox, chrome, and explorer
I'm not 100% sure, but I think I had this problem on ubuntu's firefox. Haven't used it in a while though
It's happened to me. On a Windows XP Intel Pentium 4 Hyper Threading.
Was using Firefox.
Paul, do you still have that old computer? do you remember {i} what version of firefox, and {ii} what plugins you might have installed (if any)?
Also, if you have a new computer: do you still see the same issue w. firefox?