I am not sure if it is only me. Since I updated the OS, Safari crashes very often. Moreover, the system is not very stable. For example, I was trying to copy several large folders from my external drive to my MBP. Before I went to bed, the system was preparing the copy. 7 hours later, it was still preparing to copy. I tried to cancel the copying but it did not work. I also could not shut down nor reboot the system. I had to force the system to shut down by pressing the power button. Worst update I ever had. Is there any way to solve the problems besides waiting for the next update? Thanks.