Hello Guys, first of all let me say that I am new to this forum, and any help or orientation you guys can give me would be highly appreciated, so thanks in advance. Well This post could turn into a really long one, if I tell the whole story of my Mac Pro, so instead of writing you the "iHell" I've lived through the last year, I'm just going to post a picture of a Red Led on my 2008 Mac Pro logic Board and if someone hopefully could tell me what that means I'd appreciate it. The led started to light up today, after waking the Mac from sleep it just hanged up, so I had to force and push the power button, after that a progress bar appeared and it took like 6 min to boot up on ML, so I opened the lid to take a look if something else have happened, and to my surprise that Led start to light up again. I'm saying again, because last year that same thing happened to me, and that turned out into a PSU, and Logic board replacements after the so called genius didn't knew what that led meant and told me that is just normal behavior, so I continued using it on a regular basis, at that time, the MP was just functioning ok, and all of the sudden one day it turned off and became a one expensive foot rest. I mean the Mac functions fine everything works, but that led wasn't flashing before, and now it's all the time on, and i'Ve been hours on google trying to find out, what this means, but so far no luck. I've reset the PRAM and SMC, reseated the ram, changed the internal battery for a new one, reseated the video card, cleaned the computer with compressed air, I've checked the 3 hard drives and they work just fine, ran apple hardware test, looped for many times and passed all the tests. The Led is on the upper left corner of the logic board, behind the 1st and 2nd hard drive bays,next to the BT chip. Also the diagnostic LEDs of the logic board indicates that everything should be Ok. So As my previous experience, I'd stop using the Mac until at least I could find some info of what is wrong. I cant afford to spend $2000 US again. Pardon my English, since is not my native. Language. And thanks in advance for your help.