Hi, I tried to install OS X.3 onto my parents computer (imac 800mhz) last night, selecting the erase and install feature. However, the first time I did this, it ran into an error while reading install disk no. 2. So I started all over again, with it running more smoothly the second time around. However, when I finished going through setup and go to the desktop, some of the programs would lag or crash whenver I opened them (ie. safari, software update etc). I am a PC user, looking to switch over to an Apple soon - but already I am having trouble. Can anyone recommend to me how to solve this problem? Should I reinstall again? A friend here at work told me I should do something called "zeroing out?" a feauture that erases ever little sector of the disk before installing anything? Also, Panther comes with 4 discs, how come the installation process only went through 2? What is on disks three and four? I would appreciate any help you can give me. Thank you!