  We discuss the possibility to generate in Coulomb-blockade systems steady
states that violate detailed balance. This includes both voltage biased and
non-biased scenarios. The violation of detailed balance yields that the
charge-transfer statistics for electrons tunneling into an island experiencing
strong Coulomb interaction is different from the statistics for tunneling out.
This can be experimentally tested by time-resolved measurement of the island's
charge state. We demonstrate this claim for two model systems.
