My apologies for locking up the 3685kHz pseudo-frequency last Thursday evening.
This is what happened. I called in on one PC which then crashed so tried again on another, only to find I still appeared "on channel" from my abortive earlier call! As much as I tried I could not make myself go away, HI. After about 15 mins the lock-up (presumably on the server) disappeared.
All being well I shall call in (without crashing) this coming Thursday on CQ100, which is a remarkably realistic simulation.