Same happened to me, twice in fact.
I picked the part of the log which looked like it was relevant, though if you need all of it, tell me, i have it all copied in another file

13:08:26: D3D9 device: 0x[00179080] lost. Releasing D3D9 texture: Ogre/ShadowTexture0
13:08:26: Released D3D9 texture: Ogre/ShadowTexture0
13:08:26: D3D9 Device 0x[00179080] entered lost state
13:08:27: !!! Direct3D Device successfully restored.
13:08:27: D3D9 device: 0x[00179080] was reset
13:08:28: Texture: menusystem_control_selected_background.png: Loading 1 faces(PF_A8R8G8B8,32x32x1) with hardware generated mipmaps from Image. Internal format is PF_A8R8G8B8,32x32x1.
13:08:32: Texture: grenade_crate_side.png: Loading 1 faces(PF_A8R8G8B8,256x256x1) with hardware generated mipmaps from Image. Internal format is PF_A8R8G8B8,256x256x1.
13:08:32: Texture: grenade_crate_top.png: Loading 1 faces(PF_A8R8G8B8,256x256x1) with hardware generated mipmaps from Image. Internal format is PF_A8R8G8B8,256x256x1.
13:08:35: Texture: mapview_baddies.png: Loading 1 faces(PF_A8R8G8B8,32x32x1) with hardware generated mipmaps from Image. Internal format is PF_A8R8G8B8,32x32x1.
13:08:35: Texture: mapview_battle.png: Loading 1 faces(PF_A8R8G8B8,32x32x1) with hardware generated mipmaps from Image. Internal format is PF_A8R8G8B8,32x32x1.
13:10:01: Texture: crosshair_good.png: Loading 1 faces(PF_A8R8G8B8,32x32x1) with hardware generated mipmaps from Image. Internal format is PF_A8R8G8B8,32x32x1.
13:21:04: Texture: sandbag.png: Loading 1 faces(PF_A8R8G8B8,64x64x1) with 0 generated mipmaps from Image. Internal format is PF_A8R8G8B8,64x64x1.
13:21:04: Texture: sandbagtop.png: Loading 1 faces(PF_A8R8G8B8,64x32x1) with 0 generated mipmaps from Image. Internal format is PF_A8R8G8B8,64x32x1.