When I try to install lion it causes a kernal failur within the first few minutes of installation. I went the apple store and after trying several things, they are telling me that it will not load because I upgraded my computer with a non-apple hard drive? Is that possible? Is anyone else having this problem. If this is the case it's a boat load of crap! Not to mention that Apple won't allow you to upgrade the size of your HD even if you buy it through them. That would stick me with a 160g hd if I want to upgrade to lion.