I believe that the power supply in one of our RB1000U routers is faulty due to random shutdowns of the router which require a power-cycle to get the router back into service.
Which MikroTik distributors are able to supply replacement power supplies (we are based in the UK) ?
The system works fine when running the memory tester in RouterBOOT and does not fall over; it seems to only be when the router is subject to high traffic loads which implies higher power consumption (CPU, etc).