Parallels 8 high CPU when idle, MBP 2012 10.8.1, Win7 Guest Hi all, I've recently bought 2x licenses to Parallels 8 and installed Windows 7 in a virtual machine. I am running on a Macbook Pro mid 2012 with OSX 10.8.1 and 4GB RAM, 2.3GHZ i7 quad core processor. Since the computer is new I've installed plenty of software and migrated ~300GBytes of files. After a settling in period for indexing, time machine, I'm noticing the battery life is unusually low when running parallels (even when Win7 idle). Battery life is ~6:30 in OSX which is dropping to sub 2 hours when Parallels 8 is running. In addition I notice that the CPU usage in Mac Activity Monitor shows that parallels is consuming 20-30% CPU even when both operating systems are idle (no programs open in either OS, win7 task manager showing idle). The MBP gets very hot even when idling with Parallels 8 running. Both CPU consumption / battery life are rectified by powering down the virtual machine. I have enabled both optimize for VM performance and "Long battery life". I have set the memory for the VM to 1.5GB and 250MBytes of video memory. I am hoping to get ~4 to 5 hours battery life out of MBP + Parallels + Win7 as I am a windows software developer who requires performance and portability. I don't mind disabling the nVidia GPU in Parallels/Win7 and am also about to upgrade to 512SSD / 16GBytes RAM which may well improve things. Please assist - right now I am considering returning the MBP and Parallels. Of course, I'd like to debug the system as I'm sure these things can be improved!