My macbook air is about 14 months old. The battery has 336 cycles on it and my battery capacity is already at 77%. Aren't these suppose to hold 80% capacity after 1000 cycles? Also every now and then I'll be doing something whether it be surfing the web or streaming music and applications pause and it says my hard drive is full and I must make room. Then I'll restart my computer and check how much space I have and it shows I have near 20 GB of space left on the ssd. Does anyone else ever experience this?