HI, My wife's 2011 (with thunderbolt) 15" macbook pro did a strange thing last night. I installed a programme called Switched (free version) to convert .amr nokia recording files to mp3. After running it and converting i put the mac to sleep. 30 minutes later when it was opened up again it looked like it was off. No blue light at the front, wouldn't react to the power button. We plugged in the power, (even though it had been charged, and had only just been taken off the charger) and it booted up. Once logged in it had lost the wallpaper (gone back to default) reset its clock and wifi settings. This morning when going to websites that have all ways been used, both firefox and safari claimed the certificates were all out of date (security issues). Is this a virus? In all my years with macs ive never had an issue with one. Is it coincidence? Im about to find purchased music and back up to disk with newly imported photos so i can go back to a time machine back up before i installed this programme. Anyone else had similar problems?