[imp] Resetting IMAP Folder Cache on IMP

[Andrew Eells]

Hello,

How can we administratively tell IMP to reload everyone's IMAP folders 
list?  We've upgraded recently, as described below, and everything is 
working except for peoples' preexisting folders are not showing up.

Webmail>managing folders>Rebuild Folder Tree doesn't seem to have any 
effect, nor does "show unsubscribed folders".  The Admin setup option 
$confserver[cache][folders] check box in the administration section of 
Horde does not work.

New folders created through IMP do show up.  Both the old and new 
folders are easily visible in Thunderbird or Outlook.  Horde.log doesn't 
report any errors.

In table horde_prefs, rows with pref_name = 'expanded_folders' seem to 
be storing a cache of folder names for each user, but deleting the row 
has no affect, good or bad.

We've googled quite a bit, and found nothing that seemed directly 
relevant.  We are wondering if the fix for Ticket 8805 
<http://bugs.horde.org/ticket/8805> may perhaps be contributing to our 
problem.  Thanks in advance!

_*Upgrade Details*_
Operating System: CentOS 5.4
PHP 5.1.6

                                             Old Version                
Upgraded Version
Horde Framework            3.3.6                            3.3.8
Horde Groupware Webmail Edition
         IMP                            4.1.6                        
      4.3.7
         KRONOLITH              2.1.8                            2.3.4
         MNEMO                      2.1.2                            2.2.3
         NAG                            2.1.4                            
2.3.5
         TURBA                       2.1.7                            2.3.4
         INGO                          1.1.5                            
**see below

Given the fact that we were so far behind on upgrades, many of the above 
changes had to be made manually, but everything except folders seems to 
be working well and without horde.log error messages.  Our INGO 
installation was so out of date that no upgrade sql scripts were 
provided for it, so we have left it disabled.

Thank You for your assistance,
-- 
*Andrew Eells*