[imp] Weird IMAP folder listing

[Jaap Winius]

Hi all,

When using Horde2/IMP3, the drop-down list of mail folders has always
been as it should be: there may be many mail folders, but only those
that have been subscribed to show up in the list. With Horde3/IMP4,
however, the same drop-down list shows many folders that I don't want
to see -- often twice -- and all the extra ones are empty. For example,
right now it looks much like this:

   Anderson, John
   Bunker, Archie
   mail
      Anderson, John
      Belt, Sander
      Fink, Barton
      Patterson, Jim
      Zauner, Joey
   sent-mail
   Trash
   Zimmermann, Phil
   ~
      mail
         Belt, Sander
         Clinton, George
         Gay, Bob
         Wallace, Delroy
         Zauner, Joey

... even though I meant for it to look like this using the IMAP folder
subscriptions:

   Anderson, John
   Bunker, Archie
   sent-mail
   Trash
   Zimmermann, Phil

Why are all those other folders being displayed? How can this be
prevented? They don't seem to be showing up due to folder
subscriptions, file ownership, file permissions, or IMP's initial
headers in the mail folders.

I'm running Imp H3 v4.1.5 on Horde v3.1.5. It's being served from a
Debian etch system running Apache2 and the uw-imapd package.

Any hints as to what might be going on and how to achieve the correct
results would be much appreciated.

Thanks in advance,

Jaap