[Dovecot] mozilla, error in imap command uid

[Nicolas Kowalski]

Hello.

Mozilla (1.7.3) gives me the following error message when trying to view 
some messages:

the mail server responded: Error in IMAP command UID: 
Invalid BODY[..] parameter: Missing '>' in '<10240.-7730>'.

What's wrong ?

Thanks.

-- 
Nicolas