This was an issue with older versions of Mozilla, but has been fixed in 1.5 or 1.6.
Odd, since I'm using 1.6 - seems to be rearing its ugly head again. You got a bugzilla ID on that perchance, so I can see if it's the same issue?
http://bugzilla.mozilla.org/show_bug.cgi?id=195787 http://bugzilla.mozilla.org/show_bug.cgi?id=199433
But I don't see it anymore with thunderbird 0.8.
Which version of cyrus are you using and what's the database backend for the seen.db?
There was a problem with seen state caching in some version of cyrus, but I don't have this problem neither with 2.1.15 (skiplist for seen.db) nor 2.2.3 (skiplist).
Bye -- Luca Olivetti Wetron Automatización S.A. http://www.wetron.es/ Tel. +34 93 5883004 Fax +34 93 5883007 --- Home Page: http://asg.web.cmu.edu/cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html