Activity monitor? Nothing strange?
I couldn't check activity monitor at the time - battery was nearly dead and my MagSafe was at home.
So I just recreated the scenario - only user app running being Keynote. I didn't really see anything odd in Activity Monitor - other than "spindump" process popping up and using a bit of ram.
I also, in the course of watching Activity Monitor for a bit, noticed EEventManager using chunks of memory, then turning red (not responding). Then I see multiple instances of the same named process (apparently needed to print to Epson network printer).
Also - since the PB4 update, the wake-from-sleep problem I was having, and was somewhat better in PB3, is back - with a vengeance - 9/10 times my MacBook Pro goes to sleep (regardless of if it is just by the energy saver settings or by closing the lid), and won't wake, or won't wake "all the way" up - i.e.: the screen either won't come on, or only comes on a very dim grey (volume keys still result in the system sound, pressing the dim button causes the dim screen to go black). So it isn't all the way "crashed". The light on the front goes out as well.
So I figured out that every so often, if I close the lid, the apple lights up and I can open the screen and it works as it should. IF that doesn't work, then the computer becomes totally unresponsive and the light on the front stays on. Only "solution" is to do a hard power-off and on. Not good.
Indeed - for ME, this beta is an example of 1 step forward, 3 steps back. If things don't improve soon, I will roll back and not even think about updating when the regular release comes out.
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