Recently, I got an iMac G3. I put in a new HDD (80GB), and installed Mac OS 9.2.2. It kept freezing on the installer, but now that I got it installed, it's extremely unstable. The Mac OS Setup Assistant crashed while I was going through it, and just doing basic tasks like changing settings or using the GUI cause the system to spontaneously freeze. I'm going to try to install a fan, and remove some dust, but why is it so unusable?