I put my macbook air to sleep this afternoon by closing its lid, as I usually do. When I got home a few hours later it wouldn't turn on and didn't respond to the power button being hit.
I followed the instructions on Apple's website and reset the SMC, after which it turned on. It's now working fine but I'm wondering if this problem indicates any problems with my air or if this is something that just occasionally happens. FWIW, this has never happened in the ~2 years I've owned the device.
If this is indicative of possible future problems that may render my air not usable then I would like to know now so that I can get it preventively serviced.