It could still be an app that hasn't been updated properly yet and is doing something stupid. Next time check your Activity Monitor before you reboot and see what it is. If it's an Apple app then you'll know they fucked something up, or it could be a background process you don't recognize and will have to Google, maybe other people had the same issue. But it very well could be a third party app and you'll be best off contacting them or making sure there isn't an update with a fix.
Hell, maybe the .1 update actually fixes the problem and you're not getting the fix because you're worried. Might as well update.
Step 1 was bitch on forum. I just need to keep going with the appropriate steps.
I did do the .1 update today.