timo sorry for late reply, I was testing the latest version, and it was working fine for 3 days, until today it happened again. Also it only happened on only one machine. Second was working fine.
Yes, the application is not unresponsive, but cannot be closed, only way to do so is via force quit.
I'm sorry, but I cannot give a specific time frame when it happens, as now it was working fine for 3 days.
I cannot use other sync methods, as I don't have the accounts, and actually don't want to create them.
I've downloaded the Atomic Clock, and both servers can pinged and time is retrieved successfully.