I have a 6500 and I am running the current version of Smart SDR and software in the radio. The past couple of days I have noticed that after a period of time the radio freezes up. Today while working 6m I heard a buzzy tone through the head phones and discovered the radio had locked up. Powering off and re-powering solved the problem but this is unacceptable and never occurred in the previous version of hardware/firmware that was installed. Someone said this is a known problem with the new software. Is this correct? If so when is the solution going to be rolled out? Turning the radio on and off during a contest is not going to work for me.