Re: Blu-ray problems
The problem with BD-J on BD is that while it opens up more possibilities for creative use, it also opens up more possibilities for compatibility issues since all use-cases can't be tested in advance of hardware production.
These firmware-updates should become less and less common as the hardware side gets a handle on how BD-J is being used and v.v.
I expect that after profile 1.1 it will become relatively rare.
My PS3 hasn't needed a new update since the Pirate's movies (the only software-instigated updated I've needed thus far).