After installing Mavericks 10.9.1, my system is vey slow at start up using I a 2010 Mac Pro. There is a delay in the response times for how long it takes for normal actions to occur such as when you open an app, folder, etc.. When I try to open a folder it's a delayed reaction and you see the spinning beachball. I have to let it sit for a/b 30 minutes before things become normal. Does anybody notice this issue as well?