Description of problem:
When I start monitoring after while I get this error:
==> /var/log/nocpulse/kernel-error.log <==
2008-11-26 16:46:32 Problem opening kernel log: Can't write to file '/home/nocpulse/var/kernel.log': No such file or directory
Can't call method "autoflush" on an undefined value at /usr/bin/kernel.pl line 93.

Problem is in table rhn_config_macro, where 
NPVAR = %{NPHOME}/var
NPHOME = /home/%{USER}