It's a dual 2.7 GHz G5 with 1 GB of RAM, and it's only 8 months old. The HD is already 50% full since I transferred all the data from my G3 to the G5 when I bought it. Three months ago, I started noticing that the boot times were slower than before. What worries me is the sound coming from the computer. I don't know where it's originating from, but it might be the HD. There's a continious squeaking sound coming from inside when the white screen with the grey swirly thing is spinning. After about 10-15 seconds, the HD starts reading normally, and then starts loading the OS, which only takes about 3-4 seconds. There's also another problem which wasn't there when I first bought the G5. The optical drive keeps clicking, and then makes a low beeping sound. It happens when I wake the computer up from sleep, or sometimes it happens randomly when there's nothing in the tray.