Updated both my MacBook Pro and iMac to Developer Beta 2 and both run amazingly well still, however the iMac doesn't seem to wake up when it goes into a deep sleep whereas the MacBook sleeps and wakes as normal. I have tried in no particular order. SMC Reset PRAM/NVRAM Reset Changing sleep mode from normal to safe sleep and then back again when it didn't fix it. I disabled sleep last night and left it on display sleep only and it wakes from that perfectly it just doesn't wake from deep sleep properly. I would like it to go to sleep so it uses less electricity through the night but then be there all snappy ready to go when I wiggle the mouse when I next want to use it. Any other ideas that might fix the issue? Anyone else suffering the same problem?