Thanks for the info Unknown26 and Hansmaiser. I too have the above android box. I have tried both firmwares and they both work OK (mine was shipped with ICS 4.0.3)
ICS is definately alot quicker and smoother. Youtube is fantastic. The only issue i have is with flash player in browser. I cannot load any streaming video via the any browser. Opera browser gets close but doesnt play.
I downgraded to 2.3 to test the flash issue, it worked better on 2.3 but still not great (nearly unwatchable), in fact i went back to 4.0 because this rom is so much smoother.
hopefully the next update will fix these issues.
Unknown26 where are you getting your info about the updates from? lets make this thread into all firmware updates etc.