Pretty much the whole weekend it's been a PITA. It was down for hours and hours, then be able to open it and use if for an hour or so, then go down again for hours. When open it was fast. Go away from the computer for some time, come back, then crashes with 504 for hours. Right now, came here after trying to open it but 504, 1st time today. Just checked, its working again. Its the definition of insanity.