I did not spend much time on this and am not an authority on IMAP or
upas/fs.  I could be wrong.

>Can you send me an
>IMAP protocol trace? (Along with the banner from the server.)

The trace is attached.  "8.out" is upas/fs with modified erealloc,
with the original imap4read, and with line 794 of imap.c changed to
read

	imap->debug = 1;

I modified the trace to hide my password.  Let me know if you had
something else in mind.

>What does "not like" mean in this context?

It appears the server closed the connection.  Since there is no "<-"
in the trace following the UID FETCH command, I think the first
Brdline call in imap4resp returned zero.

If it helps, I can temporarily deliver my mail elsewhere and give you
my password to this IMAP server.

-dave