Firmware v6.49 vs v5 Power Idle

Btw, is it better to call this :

targetlibs\nrf5x_12\components\libraries\pwr_mgmt.c

void nrf_pwr_mgmt_run(void)
{
##if NRF_PWR_MGMT_CONFIG_FPU_SUPPORT_ENABLED
    /*
     * Clear FPU exceptions.
     * Without this step, the FPU interrupt is marked as pending,
     * preventing system from sleeping.
     */
    uint32_t fpscr = __get_FPSCR();
    __set_FPSCR(fpscr & ~0x9Fu);
    __DMB();
    NVIC_ClearPendingIRQ(FPU_IRQn);

    // Assert if a critical FPU exception is signaled.
    ASSERT((fpscr & 0x03) == 0);
##endif // NRF_PWR_MGMT_CONFIG_FPU_SUPPORT_ENABLED

    SLEEP_LOCK();

##if NRF_PWR_MGMT_CONFIG_CPU_USAGE_MONITOR_ENABLED
    uint32_t sleep_start;
    uint32_t sleep_end;
    uint32_t sleep_duration;

    sleep_start = app_timer_cnt_get();
##endif // NRF_PWR_MGMT_CONFIG_CPU_USAGE_MONITOR_ENABLED

    DEBUG_PIN_SET();

    // Wait for an event.
##ifdef SOFTDEVICE_PRESENT
    ret_code_t ret_code = sd_app_evt_wait();
    if (ret_code == NRF_ERROR_SOFTDEVICE_NOT_ENABLED)
    {
        __WFE();
        __SEV();
        __WFE();
    }
    else
    {
        APP_ERROR_CHECK(ret_code);
    }
##else
    __WFE();
    __SEV();
    __WFE();
##endif // SOFTDEVICE_PRESENT

    DEBUG_PIN_CLEAR();

##if NRF_PWR_MGMT_CONFIG_CPU_USAGE_MONITOR_ENABLED
    sleep_end = app_timer_cnt_get();
    UNUSED_VARIABLE(app_timer_cnt_diff_compute(sleep_end,
                                               sleep_start,
                                               &sleep_duration));
    m_ticks_sleeping += sleep_duration;
##endif // NRF_PWR_MGMT_CONFIG_CPU_USAGE_MONITOR_ENABLED

    SLEEP_RELEASE();
}

over just :

sd_app_evt_wait();

Seems like there are a lot of reasons why a SoC can't sleep.. :P whilst browsing the Nordic Forums..

Btw, where is most of the power usage values coming from? I see most figures in the low uA range on the forums.. What makes our device use ~0.8mA? I'm surely getting confused by their figures, mb they are referring to only the SoC, whereas we are referring to an entire board?