Thanks for the replays.
I'm running the 10.8 already. Seems the system reposes faster.
There are a few noticeable improvements (already described all around network).
There are a few things to workout. But one of the first I noticed is that when i opened the Mac after about 20 min. it didn't ask me for a password.
Also you need to set the WiFi access again and the "Message" (now v.7).
All in all seems to be all working well and faster. $ 20 is not the greatest deal anyway. Just don't drink "Latte" for a while ;-)