Timo Sirainen wrote:
>
> I'm running out of ideas. Check with rawlog what exactly Dovecot and
> Thunderbird are talking to each others
> (http://dovecot.org/bugreport.html ). Are there any large UIDs either?
> What is Thunderbird doing just before it sends that command? Maybe its
> local cache is broken?

I don't have actual ideas on the problem, but I can offer up some help
on how to debug it. Save the below as "runtbird.bat" and place it on the
user's desktop, and tell them to run this instead of the ThunderBird
icon. This will log all the debug info from the client so you can go
through it: