UCON has now been disabled and then helped somewhat, but the server is still crashing after about 4 hours of play.
Heres the new "error" message
net 05:11:59.806] $5$7Crytek $5PB Server: Cvar List (in Memory) has been Emptied
[net 05:11:59.821] $5$7Crytek $5PB Server: Cvar Check Added: e_detail_materials_view_dist_xy IN 64 2048
[net 05:11:59.853] $5$7Crytek $5PB Server: Cvar Check Added: e_detail_materials_view_dist_z IN 64 128
[net 05:11:59.868] $5$7Crytek $5PB Server: Cvar Check Added: e_water_tesselation_amount IN 1 100
[net 05:11:59.900] $5$7Crytek $5PB Server: Cvar Check Added: r_HDRRendering IN 0 2
[net 05:11:59.931] $5$7Crytek $5PB Server: Cvar Check Added: r_postprocesseffects IN 1 1
[net 05:11:59.962] $5$7Crytek $5PB Server: Cvar Check Added: r_TexMinSize IN 64 64
[net 05:11:59.993] $5$7Crytek $5PB Server: Cvar Check Added: r_TexMaxSize IN 0 0
[net 05:12:00.025] $5$7Crytek $5PB Server: pb_sv_CvarLogging = 1 (0 to 3)
[net 05:12:00.056] $5$7Crytek $5PB Server: pb_sv_CvarWalk = 3 (0 to 4)
[net 05:12:00.087] $5$7Crytek $5PB Server: pb_sv_CvarChangedPulse = 30 (10 to 99)
[net 05:12:00.103] $5$7Crytek $5PB Server: pb_sv_CvarUserPulse = 90 (10 to 99)
[net 05:12:00.134] $5$7Crytek $5PB Server: pb_sv_CvarFreq = 2 (2 to 10)
[net 05:12:00.259] $5$7Crytek $5PB Server: MD5Tool List (in Memory) has been Emptied
[net 05:12:00.259] $5$7Crytek $5PB Server: pb_sv_md5toolfreq = 240 (10 to 300)
[net 05:12:00.321] $5$7Crytek $5PB Server: Added MD5Tool Entry: w "" v "Crysis Trainer.exe" SZ0 AT4096 LEN32 "NOT_FOUND"
[net 05:12:00.353] $5$7Crytek $5PB Server: Added MD5Tool Entry: w "" v "Scripts/Entities/Vehicles/DamagesTemplates/1b5abecc1a97f17a.xml" SZ0 AT0 LEN32 "NOT_FOUND"
[net 05:12:00.384] $5$7Crytek $5PB Server: Added MD5Tool Entry: w "" v "d3d9.dll" SZ0 AT4096 LEN32 "NOT_FOUND"
[net 05:12:00.415] $5$7Crytek $5PB Server: Attempting to resolve master8.evenbalance.com
[net 05:12:00.462] $5$7Crytek $5PB Server: Resolved to [66.180.170.20]
[net 05:12:00.509] $5$7Crytek $5PB Server: Listening for HTTP
[net 05:12:00.587] $5$7Crytek $5PB Server: PunkBuster Server (v1.301 | A1391 C2.020) Enabled
[net 05:12:00.618] Gamespy service available
[Warning] $6[net 05:12:00.618] Login error : Please, enter your nickname.
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*LOADING: Loading Level Multiplayer/PS/Mesa
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Mesa is the first map in the rotation, so thats the server restarting.