Tech Tools Pro and Disk Utility both say my SSD is fine however yesterday it took forever to open the Notes app and to open the MacBook Pro disk icon. I had to reboot my Mac which took a while and after Mac was back to normal again. This is not the first time something like this has happened. Luckily my MacBook is still under warranty but if I can avoid sending to apple I will since I use it everyday. What do you think the problem is?