I am having to reset the PRAM/NVRAM approx once every 7-10 days on my MBA 2010, otherwise it won't start. I wrote elsewhere of how I had a complete failure to start and had to bring it in to the Apple store (outside warranty). Fortunately it was only some component that had crashed and they were able to restore it. Plus they gave the machine a clean bill of health. This was about 4 weeks ago. Should I read anything into the PRAM/NVRAM issue? It's pretty annoying, for a start.