I keep on gettting We didn't understand your request.
The request sent by your browser was missing some information. Please try again.
If the problem persists, we suggest that you close all browser windows, relaunch your browser, and log into Yahoo! Mail again. If you still have problems, please contact Yahoo! Mail Customer Care.
When I use outlook, I get Message number 1 could not be retrieved. Account: 'Mark Hyder's Harry Potter Web Site', Server: 'pop.mail.yahoo.co.uk', Protocol: POP3, Server Response: '-ERR problem retrieving message.', Port: 110, Secure(SSL): No, Server Error: 0x800CCC90, Error Number: 0x800420CD