Can't get mail from second and third accounts

[FenceSitter]

I'm using Thunderbird for the first time, and I have 3 POP accounts. The first is on one server, and the second and third are on another server. So I setup 3 accounts in Thunderbird... but I can only receive mail from the first one. When I try to get mail from the second or third the status line stops at "Host contacted, sending login information...". If I try to get mail for one of those accounts again I get the "Folder is being processed, please wait" popup.

I can get mail from those accounts no problem using Outlook Express... please don't make me go back to using Outlook!