ive got an acer laptop and it has had to be returned 3 times in 2 years. All times due to the power pin, first time it broke off, second time it sparked into a small fire and third time they just didn't fix it properly. Wasn't exactly quick either the repair jobs, good 3 weeks each time.
Had it for over 3 years now and apart from that and the battery going ( very common in all laptops i believe) it is running as smooth as a babies bottom and would recomment Acer as at the time it was excellent value for money and now is a reliable product as i take extra care to ensure that no stress is put on the power lead.