Description of problem:

The `whoami`@`hostname -s` in the define of rhbsys causes grief with a newly
build kernel (from srpm) as uname -a does not report the part after the '@'
which causes depmod to fail.

Version-Release number of selected component (if applicable):

kernel-2.6.12-1.1447_FC4.src.rpm

Steps to Reproduce:
rpm -iv kernel.src.rpm
rpmbuild -ba --target <arch> kernel.spec
rpm -iv kernel.<arch>.rpm
reboot

Actual results:

Numerous modules fail to load as depmod can't find the correct module tree.

Additional info:

Suggest using `whoami`_at_`hostname -s` instead of `whoami`@`hostname -s`.