HiI have submitted some problems here before but I have so many problems that I am wondering if it may be just my iMac, or maybe all or lots of other iMacs.Problems I have1. Playground wont launch. Just sits there saying 'running <name>. This has been the past week, prior to that it would sit there saying 'Launching simulator' for 5 minutes and then it would work2. Xcode suddenly quits, randomly. Back in October-November it was quitting every ~45 minutes or so. Now it varies, sometimes couple of times a day, sometimes couple of times a week.3. Xcode is slow to load. Can take up to 5 minutes. Especially annoying when it keeps quitting4. Simulator fails to load on first attempt. Spends 5 minutes launching and then an error comes up, usually 'cant attach to pid', but sometimes 'timeout', or 1 or 2 other errors. After this first attempt the next launch works but it takes about 3-4 minutes, and then every run after that it gets quicker, but never less than 10-20 seconds. Of course if Xcode