I managed to track down the source files. The SRC_URI should point to:
http://files.pardus.de/${MY_P}.tar.bz2
instead of:
http://build.pardus.de/downloads/${MY_P}.tar.bz2
It looks like there are a few ebuilds like this in the overlay. I know Gunnar is busy so it he doesn't get time to fix these, you can always go to
http://files.pardus.de and manually download the source files to your /usr/portage/distfiles directory to merge these packages. Hope this is helpful to someone.
Jason