Several computers in the same LAN have this sort of bug (or virus infection who knows). I cannot tell for sure, when this began. I think a few computers always had it, but it's been chronic and widespread for the last 4 months or so.
On the Outlook Express mail accounts, the POP3 address keeps changing from the one I assign, to "localhost" at least once ever couple days (after I put it back in place). The login username changes too, adding a / and then the POP3 address (which is the same as the SMTP for the record).
This happens on XP, and it does regardless of substantial hardware and software differences between all PCs(SP1, SP2, patches up to date or not...).
The few computers with Microsoft Outlook proper from the Office package, are unaffected.
In my experience, Windows has a time-honored tendency to "forget" a few settings here and there, having them slip back to <whatever> time and again, so I chalked it up to this bug that by now seems inherent to this OS. But given the specifics of this situation, I'd really like to know how to get rid of it for good.
Thanks to all of you in advance!