Nagios shows only one Host (Services)

[Denis Witt <denis.witt@concepts-and-training.de>]

Hi,

after upgrade to Wheezy one of my Nagios installation shows only one (of 
three) hosts on "Services"-Page. On the "Hosts"-Page all three machines 
are listed and I can even go to the "Status-Detail"-Page.

Another Nagios instance works fine.

I've uploaded my config here: http://paste.debian.net/184146/

Any ideas?

Thanks!