I just upgraded to version (5.0.43 on both ends, mac 10 to linux (centos6.7)) in hopes of curing a recent issue. Within the last two weeks I have begun to get intermittent lockouts where my (remote) desktop is covered in a semi-transparent mist with a large spinner in the middle of the screen.
While this is happening I am able to shrink the NX frame and ssh from my mac to the nx server (linux). Nothing in the nxserver var/log dir matches the timeframe. /var/log/Xorg.0.log is being flooded with
[245562.320] AUDIT: Thu Oct 1 10:26:29 2015: 11454: client 47 connected from local host ( uid=493 gid=2290 pid=62002 )
Auth name: MIT-MAGIC-COOKIE-1 ID: 294
[245562.320] AUDIT: Thu Oct 1 10:26:29 2015: 11454: client 47 disconnected
where uid=493 is “nx”, but these don’t match time-wise (and are too numerous to count)
These lockouts last ~15 seconds or so. Some more, some less.
This is all happening on an internal network. No vpn involved, no gateways.