I enabled Trim via Terminal on 10.10.4 and experienced excessive beachballing on my Crucial M4 SSD. My MacBook model is in my signature. This was pretty odd. Anyways, I eventually disabled native Trim via Terminal and re-installed the third party TrimEnabler application. I had disabled TrimEnabler and uninstalled prior to enabling Trim natively with Terminal, so everything should have been "clean" so to speak. For whatever reason TrimEnabler works fine and I get no beachballing, while Terminal Trim that has been natively put into 10.10.4 has been a nightmare. I'm just wondering if anyone might have any ideas as to why this is, or if anyone has had a similar experience.