Yes, I see these bugs

I'm still a bit slow concerning the Kolab2Gentoo project. This is temporary though since I'm busy on Kolab CVS upstream.
The bug you mention matches
https://www.intevation.de/roundup/kolab/issue2144and the fix is available here:
http://hg.pardus.de/cgi-bin/hg.cgi/horde/HORDE_3_2_ALPHA/raw-file/c024afe5654c/framework/HK-GW-Kolab_issue_2144.patchAll of my recent horde fixes went in upstream in Horde CVS and for Kolab2Gentoo I'm waiting for the next Horde release that will happen rather soon.
This is more efficient than having five patches per package.
Cheers,
Gunnar