I am on OSX 10.5.8. I cannot copy or paste anywhere on my Macbook, Google Chrome is saying 'Aw Snap!" every time I open it, and I can't drag files out of the Trash. All of these problems occured to me at the same time. Another problem is that MacKeeper will use around 100 CPU but it won't open all the way, it just has the dot underneath the icon. I read somewhere that I should repair the permissions of the hard drive I'm on with Disk Utiity, but I'm not sure if that will mess up my computer or something. Got any tips?