Hello all, I've just installed the new OS X Yosemite on my brand new iMac that I purchased a couple of weeks ago. Is there any way to check if this installed correctly? When I logged in on Mavericks, it logged me in pretty much straight away, now, I get a beach ball, and it hangs there for a good 30 seconds to a solid minute, then the beachball goes away, and I can't click anywhere. Then, for some unknown reasons, it logs me in - is anyone else experienced this as well, and have any ideas on what could be causing it? I read in the forums that someone else was having the issues, and they solved it by switching the graphic modes from discrete to integrated - but that option doesn't seem to be in the System Prefs anymore. Another thing - as I didn't have anything on my iMac - as it's brand new, I didn't do a back up of anything. From my current experience with Yosemite - I really feel the need to go back to Mavericks, however, Apple have since pulled the installer from the AppStore, and I haven't got access to it anymore, my iMac didn't some with any installed cd's - as there's no cd player anymore in them, so any info anyone has would be fantastic. Thanks a lot folks.