Regarding power, as I mentioned earlier, don't forget all the settings you've probably tuned in PR5 that are back to the power hungry defaults in PR6. These include
IR setting (Turn "Receive all incoming beams" off)
Screen Brightness and Timing
Sleep Timing
Have you set it for frequent POP or other network access?
You don't have XCPUScaler on, do you?
Network left on?
Also, don't overlook the small little factor that you're playing with everything non-stop since it's a new toy. Has your usage shot up a wee bit?