Jack said the following On 04/10/2008 06:42 PM:
> When trying to get mail messages I receive this alert and it doesn't
> clear itself,
> "This folder is being processed. Please wait until processing is
> complete to get messages"
> Using Outlook I can download the messages from the same server.

I believe it generally happens when Thunderbird is compacting folder and
downloading new messages at the same time . There are some other reason
, mentioned here
"http://kb.mozillazine.org/Thunderbird_:_Issues_:_Folder_Being_Processed".

You can either disable Auto-compact at Tools > Options > Advanced >
Network & Disk space or just set it to some higher value .