Removed idle mode... again!? Changed work_reset rate to every 100ms & use defines rather than numerics. Change total sleep time to 4300ms after performance testing/measurement (now good to 916MH/s). Changed timeout to 15s - Throttle time is 15s. Added support for 'Busy' when submitting work. Improved logging text to include device identifier. Added a thread_enable api function, called when a thread is re-enabled. ... and removed useless re-init inside scanhash. Use modminer introduced mutex.