IMAP is time-dependently readonly

["Michael J. O'Donnell" <michael_odonnell acm org>]

I just started using Balsa 2.4.12 on Studio Xubuntu Saucy Salamander  
(switched from Thunderbird, which failed in other highly annoying  
ways). My IMAP connection to a server at mail.odonnell.koumbit.org is  
readonly much of the time, but flipped to read/write briefly. I made no  
change to the server settings during the flip flop from  
readonly-read/write-readonly. After the relapse to readonly, I tried  
varying the "Advanced" server settings regarding SSL, TLS, "Bug  
workarounds" with no apparent effect.

Balsa gets full IMAP service connection to GMail and  
imap.cs.uchicago.edu. Thunderbird gets full IMAP service from all 3  
servers.

I have searched Manual, FAQ, and Mailing List archives to no avail.  
There was a thread regarding inability to delete messages through IMAP  
in 2004, but I could not find a resolution of the problem.

Cheers,

Mike O'Donnell