I had a friend who ran into that pesky OS X issue he have seen here - Palm Desktop never asks for the admin password when installing - and he said he found a fix for it.

It looks like the problem may be not in the Mac Palm Desktop installer but in Stuffit 8.0. They've released a patch for Stuffit 8.0 that fixes an issue with UNIX permissions.

He downloaded the patch and then reran the Palm Desktop installer for his Treo 600 and it worked.

Here's the link:

http://www.aladdinsys.com/support/te...essionid=37951

Try it and let me know if it works.