My two months old G68J has suddenly started to misbehave when I press "Function" + "Right arrow" on the remote. It hangs or restarts.

I have reloaded the firmware (1.3) and the config, but it's still the same problem.

It's connected to a G98DH and a G55.

Any ideas?

Meridian G55, G68J, G98DH, HD621, MC200, AC11, DSP3200, DSP3300, Von Schweikert TS-150, Rel Storm 5.