The NOR-flash driver for the M25P10-A isn't putting the flash back into a deep-sleep mode.
I'm measuring 301 uA on the Null app and when the driver completes an operation. The datasheet says typical consumption should be around 1 uA in deep sleep.
When I remove the NorFlashCommands.sleep() command from PlatformFlashP.nc and run the Null app, the current consumption of the flash chip actually boots up at 1.3 uA.