I am getting ready to ditch my old computer and get something more current. I was hoping for a new mac pro. I have a great monitor. But I may have to settle for the mini. Probably way faster than what I have. Just sad at what the company is doing, but that's a different story. It was purchased nov 2006. Dual 2.6. Since then I have added a 750gb hard drive and updated the graphics card to an ATI Radeon 3870. And the ram is 8g So I need to sell the current one, but it has 2 problems that have been consistent for at least the last 4 years. Neither has affected the performance but both could impact a potential buyer. 1. the hard drive has an audible click/tick sound when the computer is running. about 1 second or more apart. 2. I got istat about 4 years ago. the CPU fan is always at 0. I've tried dusting it out and no improvement. I used to see high northbridge temps, but the current istat doesn't have that. But has cpu a and b at about 99 and expansion slots at 106. It has never caused any problems so far. The only significant issue is that sometimes it doesn't like to stay sleeping. It's probably not worth a lot but I have a bit of integrity at selling something with a full disclaimer. If it would help to fix it that would be great, but if it's going to cost more than I could get for the machine I would probably donate it. Just need to know what I'm dealing with. Thanks for your help.