Since I 've upgraded my 2012 rMBP to 10.10 and chose to enable FileVault my mac was crashing constantly (black screen after wake, apps crashing regularly and without a reason etc). It got worse yesterday and I 've noticed that FileVault is stuck on "optimizing". I tried to turn filevault off byt it seems like i have to wait fir the process to end befire i can decrypt my files again. It's been stuck now on optimizing for 6 hours and it won't allow me to run any other applications or shut it down... Any ideas?