Have posted this problem on the XP site but little response.
My incoming pop3 mail address is being overwritten usually on startup. It should be pop.freeserve.com but is being over written to 127.0.0.1 I am running Windows XP with sp2, Outlook Express ver 6 McAfee Internet Security Ver6 and have Windows Firewall dis-abled as recommended by McAfee. Using Wanadoo Broadband. If I put in the correct address all works well until Re-boot. Computer is on all day but is turned off overnight. Have tried various sites to look for a cause, nobody including Wanadoo and McAfee seem to have an answer. Bit I don't understand is Computer is less than a month old and set up is pretty well a standard thing.
Are you having problems with it set to 127.0.0.1? If it is local host then its OK. Its what your AV sets your incoming pop3 mail address to in order to check for viruses in incoming mails. Mine actually changes to localhost.