[imp] Premature logout

[amy.rich@tufts.edu]

amy.rich> We've deployed horde 3.0.5 and imp 4.0.4 with php 4.3.11 with imp
amy.rich> authentication.  A number of users are reporting being logged out
amy.rich> before the 60 minute timeout, even when they are in the middle of an
amy.rich> active session.

amy.rich> When this happens, imp has been sending the following password to
amy.rich> the imap server three times in a row:

amy.rich> {8}

I hit send too soon.  I forgot the log entries with enable-debug turned on in
php: 

Jan  8 07:56:04 webmail01.usg.tufts.edu ZZZZZZ*\217<CC>\204\204\204ZZZZ[1703]:
[ID 800047 local4.notice] PHP Notice:  (null)(): Authentication failed
(errflg=1) in Unknown on line 0
Jan  8 07:56:04 webmail01.usg.tufts.edu last message repeated 2 times
Jan  8 07:56:04 webmail01.usg.tufts.edu ZZZZZZ*\217<CC>\204\204\204ZZZZ[1703]:
[ID 800047 local4.notice] PHP Notice:  (null)(): Too many login failures
(errflg=2) in Unknown on line 0

Those are control characters in there.

With enable-debug turned off:

Jan 10 00:01:35 webmail01.usg.tufts.edu HORDE[3247]: [ID 800047 local4.notice]
PHP Notice:  (null)(): Authentication failed (errflg=1) in Unknown on line 0
Jan 10 00:01:35 webmail01.usg.tufts.edu last message repeated 2 times
Jan 10 00:01:35 webmail01.usg.tufts.edu HORDE[3247]: [ID 800047 local4.notice]
PHP Notice:  (null)(): Too many login failures (errflg=2) in Unknown on line 0