What's the "Mac Intel Dual Core mac"? ... Are you referring to the iMac Core Duo? Either way: No, I haven't had any font-related problems when transferring my fonts from my PowerBook G4 to my intel-based MacBook.
What happens when you want to activate one of the fonts?
Mac user since 1987. Running Mac OS X 10.8 Mountain Lion on a MacBook Air 11" & an iMac 27" and whatever's newest for my iPhone 4s, iPad 3 and AppleTV 2.
Apple Certified System Administrator 10.6, Apple Sales Professional 2008-2011, Apple Certified Mac Technician.