Computer shut downs, etc

[Tgov]

hey, i have some problems running penumbra, it crashes quite often. I updated my video und audio drivers, and it seemed to work. But now(, after i made the fuse in the game,) it crashes all 5 minutes or so, sometimes my PC (win2000, amd 3000+, ati radeon 9600) shuts down and i cant start it again for a minute (!).

btw: Another Problem: my graphic settings are not safed. i have to correct the gamma every time..

-------- THE HPL ENGINE LOG ------------

Creating Engine Modules
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Creating graphics module
Creating system module
Creating resource module
Creating input module
Creating sound module
Creating physics module
Creating ai module
Creating scene module
--------------------------------------------------------

Initializing Resources Module
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Creating resource managers
Misc Creation
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Initializing Graphics Module
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Init low level graphics
Setting video mode: 800 x 600 - 32 bpp
Init Glee...OK
Setting up OpenGL
  Max texture image units: 16
  Max texture coord units: 8
  Two sided stencil: 1
  Vertex Buffer Object: 1
  Anisotropic filtering: 1
  Max Anisotropic degree: 16
  Multisampling: 1
  Vertex Program: 1
  Fragment Program: 1
  NV Register Combiners: 0
  NV Register Combiners Stages: 11
  ATI Fragment Shader: 1
Creating graphic systems
  Creating Renderer2D
  Renderer2D created
  Creating Renderer3D
   Load Renderer3D gpu programs:
    Extrude
    Diffuse
    Fog
   Creating fog textures: Solid Additive Alpha
   init sky box
  Renderer3D created
Creating screen buffers size 800.000000 : 600.000000
Creating programs
  RendererPostEffects created
Adding engine materials
--------------------------------------------------------

Initializing Sound Module
--------------------------------------------------------
Initializing OpenAL.
  Trying to open hardware device... Success!
  Device name: SB Audigy Audio [D000]
  OpenAL Version Supported: 1.1
  Number of channels: 32
--------------------------------------------------------

Initializing Game Module
--------------------------------------------------------
Adding engine updates
Initializing script functions
--------------------------------------------------------

User Initialization
--------------------------------------------------------
Trying to load vertex program!
Success!
Creating and binding ATI shader to 1
--------------------------------------------------------

Game Running
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Loading collada for 'maps/level01_06_workshop.dae' took: 1342 ms
WARNING: Texture 'oldmachine_lambert5-fx' was not found!
WARNING: Texture 'oldmachine_lambert5-fx' was not found!
WARNING: Texture 'oldmachine_lambert5-fx' was not found!
WARNING: Texture 'oldmachine_lambert5-fx' was not found!
WARNING: Parent 'group3' couldn't be found! Failed to attach 'artifact01_pointLight1' to 'artifact01'.Attaching directly to mesh.
WARNING: Entity 'rock3' with file 'mine_rock01.ent' has name already taken by 'mine_rock02.ent'!
Start Num Of: 137
End Num Of: 120
Start Num Of: 4
WARNING: Could not find language file category ''
WARNING: Could not find language file category ''
ERROR: Cannot find sub entity 'keg_broken_pieceShape8' in mesh 'mine_keg_gunpowder_broken.dae'
Loading collada for 'maps/level01_03_shafts.dae' took: 5238 ms