hum i downloaded the sources and compiled upx and packed /System/Library/CoreServices/pbs mail didn't work but i packed the binary and then it works.
I don't know the benefits of this system yet or how much of the system that needs patching before this will work, logic did not respond well to this method for instance, neither did finder.
Anyhow thanks for the beta, it seems the custom dyld has improved a lot

For those who want to test it out, you can try this guide, its pretty easy to get working and i think it's present in macports as well
http://blog.loudhush.ro/2010/12/comp...les-using.html