2 Cyphin6
Check your PM please.
We are aware of the current problems with 3.0 and Leopard Development version and it should be fixed with the closest PD update.
To answer the main thread question - of course we are working on Parallels Desktop compatibility with Leopard, so even if due to some "last minute changes" Leopard release version won't work with PD - we'll try to fix it as soon as possible.