This has gone on for months and I am sick and tired of it. Searches only reveal people asking questions on battery drain during use. My issue is that when I step away from computer, OR even close my lid to put my macbook air to sleep, if I forgot to shut off parallels I come back to a warm and completely drained Macbook air. I am not just inconvenienced, I am worried of the longtime impact this has on my battery. This has occurred at least 20+ times to date because I cant remember to shut dow parallels every time. Running Macbook Air 13" with Parallels Desltop 8 and Windows 8. Can someone please help on what i need to do? Is this a known bug?