"remote-server-not-found" from contacts using jabber.ccc.de

I've got problems with Gajim, Openfire and contacts using jabber.ccc.de.

Just some infos first. I use my one jabber server. It runs Openfire 3.4.3 on Ubuntu Dapper Drake. As client I use Gajim out of the repositories ob Ubuntu Gutsy Gibbon, this means version 0.11.2. But i also tried 0.11.4, but this version shows the same problem.

The problem. I get from all contacts using jabber.ccc.de messages like

    [21:43:35] remote-server-not-found
    [21:45:37] remote-server-not-found

every couple of minutes. I tried Pidgin to find the source of the problem and it looks like Gajim is the culprit. When i use Pidgin I never get these messages.