Adobe has announced over at Penguin.SWF is it now Supporting 16 Exabytes, that is, runs on 64bit CPUs. This will hopefully bring less pain to Linux people on 64bit systems, where flash is currently flakey at best :)

Anyone had any success with this?

I found some good instructions for Ubuntu (intrepid, the latest) on this thread. Basically apt-get remove the libflash-nonfree package and put the downloaded .so file into your ~/.mozilla/plugins directory.