client hang up (frozen no reaction), building road

i was building a road, everything was fine until the following position:
Zone 190 Pos 863.46, 1843.16, 472.40
now my client is allways crashing (hang up) if i build the road further.
hope the log helps
i'm on vista 64-bit, will try it with xp 32-bit now

// Log File Created At: Sat May 15 14:24:56 2010
Sat May 15 14:24:56 2010 : Xsyon Version: 20100514.0
Sat May 15 14:24:56 2010 : Mode: Fullscreen
Sat May 15 14:24:57 2010 : Data Initialized
Sat May 15 14:24:57 2010 : Player Initalized
Sat May 15 14:24:57 2010 : Creating Graphics
Sat May 15 14:24:57 2010 : Success: Vertex Shader 2.0 Loaded
Sat May 15 14:24:57 2010 : Success: Pixel Shader 2.0 Loaded
Sat May 15 14:24:57 2010 : DirectGraphics Initalized
Sat May 15 14:24:58 2010 : Interface Sounds Start
Sat May 15 14:24:58 2010 : Interface Sounds End
Sat May 15 14:24:59 2010 : Warning: No Saved Actions
Sat May 15 14:25:24 2010 : Creating environment
Sat May 15 14:25:24 2010 : Creating sun
Sat May 15 14:25:25 2010 : Creating moon
Sat May 15 14:25:25 2010 : Creating water
Sat May 15 14:25:25 2010 : Creating snow
Sat May 15 14:25:25 2010 : Creating precipitation
Sat May 15 14:25:25 2010 : Loading ambient sound set
Sat May 15 14:25:27 2010 : Creating move sectors
Sat May 15 14:25:27 2010 : Creating base trees
Sat May 15 14:25:29 2010 : Creating surfaces
Sat May 15 14:25:36 2010 : Creating sectors
Sat May 15 14:25:42 2010 : Creating backdrop terrain
Sat May 15 14:25:42 2010 : Creating terrain
Sat May 15 14:25:43 2010 : World loaded
Sat May 15 14:33:31 2010 : Success: Vertex Shader 2.0 Loaded
Sat May 15 14:33:31 2010 : Success: Pixel Shader 2.0 Loaded
Sat May 15 14:34:41 2010 : Success: Vertex Shader 2.0 Loaded
Sat May 15 14:34:41 2010 : Success: Pixel Shader 2.0 Loaded



update: i'm not able to reproduce the problem with xp 32-bit

unfortunately your log doesn't show anything beyond the standard stuff

i checked every log after the crashes but i can't find some relevant information
but i'm 100% sure that the problem is not repeatable with xp 32.

generally i have a lot less client crashes with xp 32. i'm using a dual boot system (so it is the same hw).
i'm using the latest nvidia drivers with both os, not sure if this is helpful