My only issue with them, has been the battery. After about 4 years, the first laptop couldn't hold a charge at all. I'd leave it charging overnight, and within 5 minutes of unplugging it, it wouldn't even turn on.
The battery in my newer one is better, but not 100% of what I'd like. However, its probably got lousy life on it because its a full-blown Athlon, not any kind of special laptop chip.