I've written recently about my kernal panics on my imac g5 I reinstalled the original software and moved on to Tiger and it says "cannot install this on this computer" I have installed it before, it is my software bought free and clear. I don't know what to do. My son's college papers are due and we cannot get on the sites because our flash/etc. is not updated. I cannot figure out what to do, please help. I am now at 10.3.9 (I go to "about this mac", more info, and my system overview app will bounce on my tool bar and not come up.) I dont know what's going on. My hardware tests all came out clean.