MD has corporate e-mail on his laptop (running XP Pro) in Outlook to Exchange 2003. Also has a POP3 e-mail for remote working when on the road, this is in Outlook Express. Done this way so his PA only forwards the important stuff for him to read.
I set up his laptop and checked POP3 e-mail working properly and it downloaded one e-mail that had arrived since he used his old laptop (which worked fine). He went away and used the GPRS card and received several e-mails. When he got back to the office they had 'disappeared' leaving only the one e-mail in his Inbox that was there when I handed him the machine for the first time!
I assumed this was a 'profile' problem, but he uses the same domain login whether LAN or GPRS connected (the GPRS connection is Internet only, not a remote domain login). Also I have searched his HDD and can find no other Outlook Express data files anywhere. His domain login account has local admin rights on the laptop. There was a problem that I had made a typo in his SMTP server name, so he could not send e-mails - I fixed that in a jiffy, but it should have no impact on the Inbox.
The path to the OE data files is, as you would expect, within his local profile on the machine. This path does not change whether logged in by LAN or GPRS - I have checked.
The POP3 mail appears to be working ok, but he needs some of the e-mails back, and also I need to know what is happening in case it happens again.