I too have the exact same problem as Kypros with my RFX9600. On a random basis the IR ports lock up and are only cleared by a power cycle to the extender. It appears to be triggered when frequent, closely spaced IR commands are sent such as paging through the cable TV menu pages. The command is received at the RFX9600 but not passed on to the IR ports.

Firmware is 1.1.36, have switched IR ports with same result.

Anyone else experience this problem?

Any thoughts on a fix?

Thanks,
Jerry