Replying to Macbook pro .... dead

2 days ago I was just surfing the interwebs on my 3 months old MBP when suddenly it went off. When I tried to power it on again, absolutely nothing happened, not even the fans or the HDD started. So I took it to apple and they said my logic board was fucked... So everything's good, but this has got me worried. I was wondering if this was a common problem because I'd like to keep this computer for as long as possible, and having it break all the time is not something I need.