Zenoss 5.0 -> zensyslog and zentrap problem

Hi,

unfortunately zensyslog and zentrap doesn't work in our Installation.
We get following error message for zensyslog:

I0313 08:56:49.243596 00001 controller.go:612] Starting service process.
I0313 08:56:49.243721 00001 instance.go:79] about to execute: /bin/sh , [-c exec su - zenoss -c "/opt/zenoss/bin/zensyslog run -c --duallog --monitor localhost "][2]
ZenSocket Error: zensocket needs to be run as root or setuid

and for zentrap:

I0313 08:54:58.080116 00001 controller.go:612] Starting service process.
I0313 08:54:58.080271 00001 instance.go:79] about to execute: /bin/sh , [-c exec su - zenoss -c "/opt/zenoss/bin/zentrap run -c --duallog --monitor localhost "][2]
ZenSocket Error: zensocket needs to be run as root or setuid

Any ideas

regards
Achim