I have been told that the replacement Macintosh BlackBerry PPPD is no longer necessary for systems that have Snow Leopard installed. In fact, it sounds like installing the patched pppd version can actually cause issues on Snow Leopard systems.
If you have Snow Leopard on your system, please do not install the patched version of PPPD.
I will keep the replacement package available for those like myself that are still running Leopard on their systems. In addition, there is a version built for Tiger.