I have a iMac 2010. See the config below attachment. Its slow as hell. Nothing happens at all. It just starts and shuts down fine. Everything else is totally dead. I thought, upgrading to Yosemite might fix it, but its still all the same. A click takes 10 minutes to react and everything hangs all the time. Cant even open 2 apps together. Cant type anywhere, nothing! Whats the solution ? For the first time, Im really annoyed with an apple product.