This crash happens using test release 2.

RecvFrom returned SOCKET_ERROR 111 (about 20 times)
center pointcenter pointcenter pointcenter pointcenter pointcenter pointcenter
pointcenter pointcenter pointSignal: SIGSEGV [segmentation fault]
Aborting.

From the log:
Warning: Suicided None (Function Engine.DamageType.SuicideMessage:0009) Accessed
None 'Victim'
Warning: Suicided None (Function Engine.DamageType.SuicideMessage:0009) Accessed
None 'Victim'
Warning: Suicided None (Function Engine.DamageType.SuicideMessage:0009) Accessed
None 'Victim'
Log: (Karma:) Excessive Joint Error. Destroying RagDoll.
Log:
Developer Backtrace:
Log: [ 1]  ./ut2004-bin [0x86c932c]
Log: [ 2]  /lib/libpthread.so.0 [0x40044383]
Log: [ 3]  /lib/libc.so.6 [0x401407f8]
Log: [ 4] 
./ut2004-bin(KIntersect__FP13_McdModelPairP19_McdIntersectResult+0x301) [0x81d2fe1]
Log: [ 5]  ./ut2004-bin [0x81d2a1e]
Log: [ 6] 
./ut2004-bin(KIntersect__FP13_McdModelPairP19_McdIntersectResult+0x274) [0x81d2f54]
Log: [ 7]  ./ut2004-bin [0x81d2a1e]
Log: [ 8] 
./ut2004-bin(KIntersect__FP13_McdModelPairP19_McdIntersectResult+0x274) [0x81d2f54]
Log: [ 9] 
./ut2004-bin(KHandleCollisions__FP22_McdModelPairContainerP6ULevel+0x178)
[0x81d31bc]
Log: [10]  ./ut2004-bin(KUpdateContacts__FRt6TArray1ZP6AActorP6ULeveli+0x74f)
[0x81d1243]
Log: [11]  ./ut2004-bin(KTickLevelKarma__FP6ULevelf+0x3cb) [0x860324f]
Log: [12]  ./ut2004-bin(Tick__6ULevel10ELevelTickf+0x35b) [0x82df05b]
Log: [13]  ./ut2004-bin(Tick__11UGameEnginef+0x3cf) [0x82889d7]
Log: [14]  ./ut2004-bin(SDL_SetVideoMode+0x83b) [0x814db43]
Log: [15]  ./ut2004-bin(main+0x69bc) [0x815851c]
Log: [16]  /lib/libc.so.6(__libc_start_main+0xcc) [0x4012cdcc]
Log: [17]  ./ut2004-bin(readdir+0x99) [0x814d3e1]
Log: Unreal Call Stack: McdContactSimplify <- Types <- KIntersect <-
KAggregateGenericIntersect <- Intersect Function <- Types <-$
Exit: Exiting.
Log: FileManager: Reading 0 GByte 303 MByte 460 KByte 414 Bytes from HD took
16.395556 seconds (5.423581 reading, 10.971975 seeki$
Log: FileManager: 0.000000 seconds spent with misc. duties
Uninitialized: Name subsystem shut down
Uninitialized: Allocation checking disabled
Uninitialized: Log file closed, Wed Apr 14 00:01:04 2004