I still have the problem, and my MP server still crash multiple time per day.
gungame/zm seems ok...
Interesting thing, in the log file the game launch line change sometime:
at game launch it start with \g_gametype
for some reason it become \com_maxclients\18 after some time + \party_maxplayers\18 : I did not add this !
Not sure it is what make it crash but I thing this is why my server fall back to 18 max player after some time...
I attached crashdump / cfg files:
link text
Note: interesting thing: I am facing an internet connection issue at the moment, and it may be related because disconnection time seems to match crash time. I will keep monitoring it..