I am having exactly the same problem myself.
System Information
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Time of this report: 9/20/2009, 11:12:23
Machine name: KISTA
Operating System: Windows XP Professional (5.1, Build 2600) Service Pack 3 (2600.xpsp.080413-2111)
Language: English (Regional Setting: English)
System Manufacturer: American Megatrends Inc.
System Model: K7S41GX
BIOS: Version 1.00
Processor: AMD Athlon XP 2200+, MMX, 3DNow, ~1.8GHz
Memory: 2048MB RAM
Page File: 754MB used, 3189MB available
Windows Dir: C:\WINDOWS
DirectX Version: DirectX 9.0c (4.09.0000.0904)
DX Setup Parameters: Not found
DxDiag Version: 5.03.2600.5512 32bit Unicode
Display Devices
---------------
Card name: Radeon X1650 Series
Manufacturer: ATI Technologies Inc.
Chip type: ATI Radeon Graphics Processor AGP (0x71C6)
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I have tried the following: Complete reinstall of the game, reinstall of the system, disabling the video, sound, Disable Vertex Buffer Objects=1, running in compatibility mode for 9x. Nothing helped. The game doesn't include any mods, and the cheats haven't been used.
If anyone can shed any light on this particular issue (which occurs in KotOR as well (for me, anyway), turret mini-games refuse to terminate correctly)