Yesterday, I was in a client's office with my ageing MacBook pro (see model in sig) picking up some files for a job. I'd forgotten my power supply and my battery was getting a it low so the client offered me their mains adaptor to use. It was one of the newer models, with the new style MagSafe socket. Anyway, I used it for about an hour before I came back home to start working on the job. I used the laptop when I got home to get the files I needed from the laptop to the desktop machine and then put it to sleep. Today, I went to switch the machine on and there was no power at all, no LED on the front and no chime / waking when the power button was pushed.....Completely dead. The red charging light comes on when I connect my power supply to it but interestingly, the battery doesn't seem to be charging. Anyone have any idea what the problem is? have I fried my MacBook pro by using a new mains adaptor with it? Seems a bit coincidental that I have a completely dead laptop with no signs of power so soon after using a different and more modern PSU. Obviously it's well out of guarantee, even with AppleCare and I have a feeling a genius is just going to give me the new logic board / time to upgrade line if I take it into an apple store.