Hi, edu, thanks for your reply!.
Yes, the intervalometer actually works when you set 1 sec intervals, BUT is not a shot every 1 sec, is more like every 2 or 3 seconds...
I was using a shutther speed of 1/80, and also used 1/600 in others circumstances.
Everything works great with 20120415-7 release, so i keep that version for now.
Cheers!