The program fails during loading. gdb cannot give more information. likely it is a glibc problem (running 2.2.5) This system works just fine with RH Linux 6.1, 6.2 (kernel 2.2.16-3) but not with updated RH Linux 7.0 with new kernel.
according the the documentation in the original dhcpcd it is required to remove the old .cache file. Otherwise this shit will happen. (Maybe somthing to put into the update/install scripts? ;-) regards, Nico Baggus (Case closed)
I have submitted patches for this to the maintainer of the package. There is a new version available now!
Closing old and apparently fixed bug. Apologies for the unresponsiveness of the previous dhcp packager...