I have been having issues with my Macbook Air 1.86 Core 2 Duo, 120gb HD. I can't exactly say when problems started happening, I was given this laptop after my brother in law started having issues. He is not exactly computer savvy and it looks like he possibly installed some kind of malware, I'm not sure but something definitely kept popping up trying to get you to buy the updated version of some virus program or whatever (sorry don't remember what it was). Not sure if that is related but thought I'd add it in. Main issues are the computer takes forever to start up, will do the spinning beachball when starting up apps or doing things in apps. The computer normally recovers but it can take some time. I tried to install Lion on it but had issues, for some reason when it tried to get to the point where the computer would restart to continue with the install it would say an error happened. I was able to put Lion on a USB drive so I will attempt a clean install. What I wanted to find out is what is the likely cause of these problems? Does it seem likely that the hard drive is the problem? Or is it possible that it's the ram? The computer is in decent shape, it's definitely quite possible the laptop has been banged around a lot. Any help would be appreciated. Thanks!