mailman management fails to authenticate internal options

Virtualmin mailman module works properly creating accounts from the panel but fails to ensure correct authentication when

1) managing mailman
Services>Mailman [Manage]

2) accessing mailman directly

In both cases, mailman prompts for re-authentication when selecting any options.

This problem seems related to wrong cookies?

Related problems are described here:
http://www.virtualmin.com/index.php?option=com_fireboard&Itemid=77&func=...

Status: 
Closed (fixed)