I had a strange experience with my MacBook Air rev B SSD this April fools day. I have been unable to find anything similar reported on the internet so I am sharing this in case anyone else had a similar experience. My computer was logged in to the guest account, asleep by my bed, when about 7am the logo lit up for about 2 seconds, lighting up the whole room. My partner also noticed it. When I opened the computer, all the applications were missing. I thought this was odd, but since I didn't use the guest account for anything special, I just opened another guest account. My main account was normal. The next day the applications were all back again. I was worried that I might have had a mac virus or trojan or similar, but I have been unable to find any reports of any with this kind of behaviour. I do not have antivirus software but have checked that I don't have the trojan that was with the pirated iWork09. Any thoughts?