Mine

Nov  7 08:59:59 localhost NXNODE 2.1.0-7[2560]: INFO: getting agent pid: cannot read pid file 
'/home/zajjko/.nx/C-zajjkobuntu-1007-4A9B586AF89B0C7F27EB7B7B8D69679E/pids/agent'. 
Exiting. 'main:nxnode:7874'

Nov  7 08:59:59 localhost NXNODE 2.1.0-7[2560]: INFO: directory 
'/home/zajjko/.nx/C-zajjkobuntu-1007-4A9B586AF89B0C7F27EB7B7B8D69679E' 
moved into 
'/home/zajjko/.nx/F-C-zajjkobuntu-1007-4A9B586AF89B0C7F27EB7B7B8D69679E' 
for investigation 'main:nxnode:7929'

Nov  7 08:59:59 localhost NXSERVER 2.1.0-9[2538]: ERROR: (exception id 0133CFF9) NX> 596 ERROR: NXNODE Ver. 2.1.0-7  (Error id e998CF0) 

Nov  7 08:59:59 localhost NXSERVER 2.1.0-9[2538]: ERROR: (exception id 0133CFF9) NX> 596 ERROR: Tue Nov  7 08:59:58 2006 running as user: 'zajjko' (uid: 1000) on ''
Nov  7 08:59:59 localhost NXSERVER 2.1.0-9[2538]: ERROR: (exception id 0133CFF9) NX> 596 ERROR: in node start session: create session: run commands 
Nov  7 08:59:59 localhost NXSERVER 2.1.0-9[2538]: ERROR: (exception id 0133CFF9) NX> 596 ERROR: execution of last command failed

Nov  7 08:59:59 localhost NXSERVER 2.1.0-9[2538]: ERROR: (exception id 0133CFF9) NX> 596 last command: /bin/bash --login -c 'xauth -v source /home/zajjko/.nx/C-zajjkobuntu-1007-4A9B586AF89B0C7F27EB7B7B8D69679E/scripts/authority'

Nov  7 08:59:59 localhost NXSERVER 2.1.0-9[2538]: ERROR: (exception id 0133CFF9) NX> 596 exit value: 1
Nov  7 08:59:59 localhost NXSERVER 2.1.0-9[2538]: ERROR: (exception id 0133CFF9) NX> 596 stdout:
Nov  7 08:59:59 localhost NXSERVER 2.1.0-9[2538]: ERROR: (exception id 0133CFF9) NX> 596 stderr: xauth:  error in locking authority file /home/zajjko/.Xauthority
Nov  7 08:59:59 localhost NXSERVER 2.1.0-9[2538]: ERROR: (exception id 0133CFF9) NX> 596 init: stdin arguments: 
user=zajjko,userip=212%2e247%2e15%2e161,uniqueid=4A9B586AF89B0C7F27EB7B7B8D69679E,display=1007,license=%28None%29,subscriptionid=None,productid=LFE,reconnect=1,balance_host=localhost,balance_host_realip=192%2e168%2e0%2e50,encryption_mode=1,connection=local,images=32M,cache=8M,client=winnt,media=0,backingstore=1,strict=0,clipboard=both,shpix=1,rootless=0,composite=1,session=Zajjko,shmem=1,type=unix%2dgnome,virtualdesktop=1,nodelay=1,screeninfo=1024x738x16%2brender,streaming=1,keyboard=pc102%2fse,geometry=1024x738,link=adsl
Nov  7 08:59:59 localhost NXSERVER 2.1.0-9[2538]: ERROR: (exception id 0133CFF9)  XNodeExec::exec('startsession','user=zajjko&userip=212%2e247%2e15%2e161&uniqueid=4A9B586AF89B0C7...', 
'localhost', 22) called at handlers/nxserver.pl line 2857

Nov  7 08:59:59 localhost NXSERVER 2.1.0-9[2538]: ERROR: (exception id 0133CFF9) NXShell::handler_session_start('--link="adsl" --backingstore="1" --streaming="1" --nodelay="1" -...') called at NXShell.pm line 374

Nov  7 08:59:59 localhost NXSERVER 2.1.0-9[2538]: ERROR: (exception id 0133CFF9) NXShell::handle_command('startsession', '--link="adsl" 
--backingstore="1" --streaming="1" --nodelay="1" -...') called at NXShell.pm line 145

Nov  7 08:59:59 localhost NXSERVER 2.1.0-9[2538]: ERROR: (exception id 0133CFF9) NXShell::run() called at nxserver.pl line 4519

Nov  7 08:59:59 localhost NXSERVER 2.1.0-9[2538]: ERROR: (exception id 0133CFF9) eval {...} called at nxserver.pl line 4478