Crash on Vertex buffer problem

[browserice]

Had my first Ryzom crash this year:

2008/08/17 19:18:34 client_ryzom_rd.exe DBG c34 udp_sock.cpp 178 : LNETL0: Socket 1936 received 248 bytes from peer ari1.ryzom.com:47851 (91.121.124.29)
2008/08/17 19:18:34 client_ryzom_rd.exe DBG c34 character_cl.cpp 2198 : <CCharacterCL::endAnimTransition> rotation : set dir as end anim dir
2008/08/17 19:18:34 client_ryzom_rd.exe DBG c34 udp_sock.cpp 178 : LNETL0: Socket 1936 received 209 bytes from peer ari1.ryzom.com:47851 (91.121.124.29)
2008/08/17 19:18:34 client_ryzom_rd.exe DBG c34 udp_sock.cpp 178 : LNETL0: Socket 1936 received 263 bytes from peer ari1.ryzom.com:47851 (91.121.124.29)
2008/08/17 19:18:34 client_ryzom_rd.exe DBG c34 user_entity.cpp 2399 : Current material = 5
2008/08/17 19:18:34 client_ryzom_rd.exe DBG c34 udp_sock.cpp 178 : LNETL0: Socket 1936 received 225 bytes from peer ari1.ryzom.com:47851 (91.121.124.29)
2008/08/17 19:18:34 client_ryzom_rd.exe INF c34 impulse_decoder.cpp 72 : CLIMPD: received new impulsion 1 (len=131) at level 2 (channel 1)
2008/08/17 19:18:34 client_ryzom_rd.exe DBG c34 impulse_decoder.cpp 82 : CLIMPD: at level 2 (channel 1), 1 actions (ReceivedAck=56752/lastAck=56750/nextSentPacket=56754)
2008/08/17 19:18:34 client_ryzom_rd.exe DBG c34 cdb_synchronised.cpp 169 : Update DB
2008/08/17 19:18:34 client_ryzom_rd.exe DBG c34 character_cl.cpp 2198 : <CCharacterCL::endAnimTransition> rotation : set dir as end anim dir
2008/08/17 19:18:35 client_ryzom_rd.exe DBG c34 udp_sock.cpp 178 : LNETL0: Socket 1936 received 263 bytes from peer ari1.ryzom.com:47851 (91.121.124.29)
2008/08/17 19:18:35 client_ryzom_rd.exe DBG c34 user_entity.cpp 2399 : Current material = 5
2008/08/17 19:18:35 client_ryzom_rd.exe DBG c34 udp_sock.cpp 178 : LNETL0: Socket 1936 received 205 bytes from peer ari1.ryzom.com:47851 (91.121.124.29)
2008/08/17 19:20:00 client_ryzom_rd.exe AST c34 vertex_buffer.cpp 1170 : "_Parent->checkLockedBuffer()"
-------------------------------
User Crash Callback:
-------------------------------
UserId: 445247
HomeId: 103
ShardId: 103
On a Mainland Shard
Application: ryzom_live
Player Name: 'Browserice'
UserPosition: 18783.78 -24348.36 -6.36
ViewPosition: 18783.78 -24348.36 -6.36
Time in game: 3h 12min 7sec
LocalTime: 2008/08/17 19:20:00
ServerTick: 1062463568
ConnectState: Connected
LocalAddress: :1041 (192.168.0.100)
Language: English
ClientVersion: 1.2.0.904
PatchVersion: 610
Client is online
NumServerHOP: 1
NumFarTP: 0
NumReselectPerso: 0
Connection Events: HOP
Memory: 104MB/1535MB
Process Virtual Memory: 1956MB
NeL Memory: 0B
OS: Microsoft Windows XP Service Pack 2 (Build 2600) (5.1 2600)
Processor: AMD Athlon(tm) XP / x86 Family 6 Model 10 Stepping 0 / AuthenticAMD / 1300MHz / 1 Processors found
CPUID: 383fbff
HT: NO
CpuMask: 1
NeL3D: Direct3d / ati2dvag.dll / RADEON 9600 SERIES / \\.\DISPLAY1 / driver version : 6.14.10.6833
Sound mixer:
Playing sources: 215
Available tracks: 17
Used tracks: 15
Muted sources: 0
Sources waiting for play: 0
HighestPri: 0 / 2
HighPri: 0 / 4
MidPri: 15 / 6
LowPri: 0 / 8
FreeTracks: 17 / 32
Average update time: 0.000009 msec
Average create time: 0.000000 msec
Estimated CPU: 0.000011%%
Sound driver:
FMod Driver
3d hw buffers: 24
2d hw buffers: 32
-------------------------------

PC Config:
AMD Athlon XP 3000+
2Gb memory
2HD : 1-80Gb for all O/S, 1-250Mb for all games, data and backups
ATI Radeon 9600Xt
DirectX 9.0c
Windows XP Pro SP2 (always updated)