Game started to run very slowly around turn 20; decided to save and restart the game. Loading a saved game makes the game lock up. Repeated this a couple of times. Dunno if the debug.err file is useful to you in this instance, but...
DebugMessage: Version 0.805 last updated on: Wed Jun 30 21:36:52 2010
DebugMessage: Entering WinMain
DebugMessage: ******* Starting Game Shell *******
DebugMessage: *********DXDiag info follows.*********
System Info
Time: 7/1/2010, 19:54:25
DirectX Version: DirectX 9.0c (4.09.0000.0904)
Machine Name: CHRIS
Operating System: Windows XP Professional (5.1, Build 2600) Service Pack 3 (2600.xpsp_sp3_gdr.100216-1514)
Languages: English (Regional Setting: English)
System Manufacturer: NVIDIA
System Model: 122-CK-NF68
BIOS: Phoenix - AwardBIOS v6.00PG
Processor: Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz (4 CPUs)
Physical Memory: 2558MB RAM
Page File: 616MB used, 3830MB available
Windows Dir: C:\WINDOWS
Display Info
Display device 1:
Device Name: \\.\DISPLAY1
Card Name: NVIDIA GeForce 8800 GTX
Manufacturer: NVIDIA
Chip Type: GeForce 8800 GTX
DAC Type: Integrated RAMDAC
Key Device: Enum\PCI\VEN_10DE&DEV_0191&SUBSYS_C8313842&REV_A2
Display Memory: 768.0 MB
Current Display Mode: 2560 x 1600 (32 bit) (60Hz)
Monitor Name: Plug and Play Monitor
Monitor Max Resolution: 1600,1200
Driver Name: nv4_disp.dll
Driver Version: 6.14.0011.9107
Driver Date: 9/27/2009 17:12:22
DirectX Acceleration Enabled: Yes
Sound info
Sound device 1:
Description: Realtek HD Audio output
Default Sound Playback: Yes
Default Voice Playback: Yes
Hardware ID: HDAUDIO\FUNC_01&VEN_10EC&DEV_0885&SUBSYS_10ECE601&REV_1001
Manufacturer ID: 1
Product ID: 100
Driver Name: RtkHDAud.sys
Provider: Realtek Semiconductor Corp.
Driver Version: 5.10.0000.5296
Driver Date: 9/12/2006 20:27:00
Type: WDM
Other Drivers:
Acceleration Level: 3
Cap Flags: 0
Min/Max Sample Rate: 0, 0
DebugMessage: *********END dxdiag info.*********
DebugMessage: Using 2 samples for multisampling.
DebugMessage: Game Resolution: 1024 x 768 (windowed mode)
DebugMessage: HAL (hardware vertex processing)NVIDIA GeForce 8800 GTX
DebugMessage: Presentation Interval: Immediate.
DebugMessage: Back Buffer Bit Depth: X8R8G8B8.
DebugMessage: 32-bit z-buffer using 24-bits for the depth channel and 8-bits for the stencil channel.
DebugMessage: ** Checking Direct3D 9 Device Capabilities ************************************
DebugMessage: A full-color cursor is supported in hardware at high resolution modes.
DebugMessage: Bump mapping is supported.
Debug Message: Device is now ready
Debug Message: GFX-THREAD: DISABLED
DebugMessage: Border size reported as 6 by 32
DebugMessage: Shell initialization complete
DebugMessage: Elemental: War of Magic is activated.
DebugMessage: ***** Initializing Game *****
DebugMessage: Timer Frequency is 0 8f0d8d30
DebugMessage: Initializing sound card.
DebugMessage: initailizing bink
DebugMessage: Create anchor mwin
DebugMessage: Load texture atlas.
DebugMessage: InitializeWorld
DebugMessage: Create popup manager.
DebugMessage: InitializeMWinStripEngine
DebugMessage: InitializeMWinDeferredTextRenderer
DebugMessage: Initialize effect system.
DebugMessage: InitializeSpellRepository
DebugMessage: InitializeTriggerManager
DebugMessage: InitializeMusicLayerGroupManager
DebugMessage: InitializeMultiplayerClient
DebugMessage: LoadCoreXMLData
DebugMessage: No files found matching mask C:\Documents and Settings\CAA\My Documents\My Games\Elemental\Items\*.xml
DebugMessage: No files found matching mask C:\Documents and Settings\CAA\My Documents\My Games\Elemental\Race\*.xml
DebugMessage: No files found matching mask C:\Documents and Settings\CAA\My Documents\My Games\Elemental\Stamps\*.xml
DebugMessage: No files found matching mask C:\Documents and Settings\CAA\My Documents\My Games\Elemental\Tiles\*.xml
DebugMessage: No files found matching mask C:\Documents and Settings\CAA\My Documents\My Games\Elemental\RaceTypes\*.xml
DebugMessage: No files found matching mask C:\Documents and Settings\CAA\My Documents\My Games\Elemental\Effects\*.xml
DebugMessage: No files found matching mask C:\Documents and Settings\CAA\My Documents\My Games\Elemental\Quests\*.xml
DebugMessage: LoadCoreXMLData finished 3
Debug Message: WARNING: Elemental Sub Pack 'M_Warg_Mounted_AttackShieldKill_Animations' was set to unrecognized animation type: 'AttackShieldKill'
Debug Message: WARNING: Elemental Sub Pack 'M_Warg_Mounted_AttackTwoKill_Animations' was set to unrecognized animation type: 'AttackTwoKill'
Debug Message: WARNING: Elemental Sub Pack 'M_Warg_Mounted_AttackSpearKill_Animations' was set to unrecognized animation type: 'AttackSpearKill'
Debug Message: WARNING: Elemental Sub Pack 'M_Warg_Mounted_AttackBowKill_Animations' was set to unrecognized animation type: 'AttackBowKill'
Debug Message: WARNING: Elemental Sub Pack 'M_Horse_Mounted_AttackShieldKill_Animations' was set to unrecognized animation type: 'AttackShieldKill'
Debug Message: WARNING: Elemental Sub Pack 'M_Horse_Mounted_AttackTwoKill_Animations' was set to unrecognized animation type: 'AttackTwoKill'
Debug Message: WARNING: Elemental Sub Pack 'M_Horse_Mounted_AttackSpearKill_Animations' was set to unrecognized animation type: 'AttackSpearKill'
Debug Message: WARNING: Elemental Sub Pack 'M_Horse_Mounted_AttackBowKill_Animations' was set to unrecognized animation type: 'AttackBowKill'
Debug Message: WARNING: Elemental Sub Pack 'K_Soldier_Mounted_Horse_AttackShieldKill_Animations' was set to unrecognized animation type: 'AttackShieldKill'
Debug Message: WARNING: Elemental Sub Pack 'K_Soldier_Mounted_Horse_AttackTwoKill_Animations' was set to unrecognized animation type: 'AttackTwoKill'
Debug Message: WARNING: Elemental Sub Pack 'K_Soldier_Mounted_Horse_AttackSpearKill_Animations' was set to unrecognized animation type: 'AttackSpearKill'
Debug Message: WARNING: Elemental Sub Pack 'K_Soldier_Mounted_Horse_AttackBowKill_Animations' was set to unrecognized animation type: 'AttackBowKill'
Debug Message: WARNING: Elemental Sub Pack 'K_Soldier_Mounted_Warg_AttackShieldKill_Animations' was set to unrecognized animation type: 'AttackShieldKill'
Debug Message: WARNING: Elemental Sub Pack 'K_Soldier_Mounted_Warg_AttackTwoKill_Animations' was set to unrecognized animation type: 'AttackTwoKill'
Debug Message: WARNING: Elemental Sub Pack 'K_Soldier_Mounted_Warg_AttackSpearKill_Animations' was set to unrecognized animation type: 'AttackSpearKill'
Debug Message: WARNING: Elemental Sub Pack 'K_Soldier_Mounted_Warg_AttackBowKill_Animations' was set to unrecognized animation type: 'AttackBowKill'
Debug Message: Campaign Def is overwriting an opponent at ID 1.
Debug Message: Campaign Def is overwriting an opponent's leader at ID 1.
Debug Message: Campaign Def is overwriting an opponent at ID 2.
Debug Message: Campaign Def is overwriting an opponent's leader at ID 2.
Debug Message: Campaign Def is overwriting an opponent at ID 3.
Debug Message: Campaign Def is overwriting an opponent's leader at ID 3.
Debug Message: Campaign Def is overwriting an opponent at ID 4.
Debug Message: Campaign Def is overwriting an opponent's leader at ID 4.
Debug Message: Campaign Def is overwriting an opponent at ID 5.
Debug Message: Campaign Def is overwriting an opponent's leader at ID 5.
Debug Message: Faction Ability RaceType is Unknown: Being Purged from Ilyan Orekeepers
Debug Message: Faction Ability RaceType is Unknown: Being Purged from Settlers of Lujhahn
Debug Message: Faction Ability RaceType is Unknown: Being Purged from Polapel Mystics
DebugMessage: LoadCoreXMLData finished
Debug Message: Player -1 doesn't have a tech manager!
Debug Message: Kingdom of New Pariden Tried to Adjust Invalid Ability:
Debug Message: Kingdom of New Pariden Tried to Adjust Invalid Ability:
DebugMessage: Create setup screens.
Debug Message: Started Load Game XML Thread
DebugMessage: LoadGameXMLData
DebugMessage: No string tables in C:\Program Files\Stardock Games\Elemental\Data\English\*.tips
DebugMessage: Set mouse.
DebugMessage: Set update timer.
DebugMessage: Popup Manager Update: Unhiding LoadWnd
Debug Message: LOAD GAME: Loading Quick Data
Debug Message: Finished Load Game XML Thread