This is also already fixed in CVS,  by the same commit as mentioned in 
Bug: 6037

...also moving to Turba since it's not really Kolab specific.

It'd be helpful if you could attach the patches to the tickets instead 
of putting them inline - easier to avoid line wrapping confusion that 
way. Also please take a quick read through 
http://www.horde.org/source/contribute.php - unified diffs are usually 
easier to read for patches, etc. Thanks!

i am using kolab-2.1 (debian unstable) and horde-webmail-1.1rc1



the following patch sedates some php errors for kolab users on first login:



diff -r 
horde-webmail-1.1-rc1/turba/lib/Maintenance/Task/upgradelists.php 
horde-webmail-1.1-rc1-netzwerkteam/turba/lib/Maintenance/Task/upgradelists.php

34,55c34,57

<                 $cnt = $lists->count();

<                 for ($j = 0; $j < $cnt; ++$j) {

<                     $list = $lists->next();

<                     $attributes = $list->getAttributes();

<                     $members = @unserialize($attributes['__members']);

<                     $c = count($members);

<                     for ($i = 0; $i < $c; ++$i) {

<                         if (substr_count($members[$i], ':') == 2) {

<                             
preg_match('/^([a-zA-Z0-9]+:[a-zA-Z0-9]+)(:[a-zA-Z0-9]+)$/', 
$members[$i], $matches);

<                             $source = $matches[1];

<                             $contact_key = substr($matches[2], 1);

<                         } elseif (substr_count($members[$i], ':') == 1) {

<                             list($source, $contact_key) = 
explode(':', $members[$i]);

<                         } else {

<                             break;

<                         }

<                         $source = $this->_updateShareName($source);

<                         $members[$i] = $source . ':' . $contact_key;

<                     }

<                     $list->setValue('__members', serialize($members));

<                     $list->store();

<                 }

---

best,

mike