problem with gnus nnimap

[Andreas Ames]

This bug report will be sent to the Free Software Foundation,
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In GNU Emacs 21.1.1 (i386-mingw-nt5.0.2195)
 of 2001-10-29 on FR102060
configured using `configure --with-gcc (2.95)'
Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: DEU
  locale-coding-system: iso-latin-1
  default-enable-multibyte-characters: t

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

Error message when quitting a nnimap group summary ( by pressing 'q'
).  The message is repeated below.  The imap-server is "MS Exchange" (
version 5.5, afaik ).  OS is Windows 2000.  After starting gnus by
'M-x gnus', typing my IMAP password and agreeing that the password may
be stored for the current session I put point over the group, pressed
'SPC' and 'q' immediately afterwards.


Recent input:
<return> y <up> <up> SPC q <menu-bar> <help-menu> 
<report-emacs-bug>

Recent messages:

Checking new news...done
Retrieving newsgroup: nnimap+Exchange:INBOX...
nnimap: Updating info for nnimap+Exchange:INBOX...done
Fetching headers for nnimap+Exchange:INBOX...done
Generating summary...done
Expiring articles...
error in process filter: imap-parse-response: Internal error, tag 21 status BAD 
code nil text Protocol Error: "Invalid AND key in SEARCH command"
error in process filter: Internal error, tag 21 status BAD code nil text 
Protocol Error: "Invalid AND key in SEARCH command"
Expiring articles...done