Someone is locally selling a powermac g5 for $500 with the following specs: Processor Speed: 1.8 GHz single Memory: 512 MB RAM Hard Drive: 80 GB Graphics Card: 64 MB VRAM Drive: Pioneer DVD-RW CD-RW Operating System: Mac OS 10.3 Panther and additional software. Should I jump on this? This will be my first mac, so im pretty much in the dark. Its probably out of warranty with applecare, but do g5 powermacs have many problems? By comparison, I was previously looking at the intel mac mini line before I saw this.