I was working the other day and my G5 turns off from nothing, no andvice, like when you unplug it. I have a UPS, so thats not the problem, I thought it was an isolated issue, but today it happen again!!! My Machine is a DP 2.3 bought in Agoust. What can I do, I have a lot of work, I cant stand a day with out it, so take it to apples is not an option. Thanks!