Bluemanta

I'm glad to see that my intial post made you think about the problem :-) (IR led lite when camera turned off)
I'm not quite sure it's really bothering in the end, I just wanted to know initially if it was something specific to my camera (it's a brand new one, I had to sent back the 1st one because of a problem with the autofocus mode selector which operated erratically).
 
I still haven't had enough time yet to fully test the benefits of the new firmware, I hope it'll be as good as many have reported (especially in the C-mode).
I use both 23mm 1.4 and 56mm 1.2, I'm not sure if it makes autofocus faster though in standard shooting conditions.