Tman.... Shift-F10 does the trick, thanks. It's what Doug was looking for.

Now that I think about it, this question came up before on the BBS, in a thread that I participated in, and I'd forgotten the answer. I believe we were discussing it in relation to Internet Explorer, but it seems to apply to the Windows Desktop and Explorer as well. Don't know why I didn't remember it when Doug asked me this question privately earlier today.

And Doug, I agree that it sounds like your network's main "time server" computer has an incorrect clock. I forget how to set up the time server on the network (we're not using one on our network), but start looking at servers.