Random 'hangs' in all source games

[Gravy]

Figured I might as well post here as much as anywhere else. In any source game/mod, I get random 'hangs' where the game will just seem to freeze up as though it is going to crash, and then it goes back to whatever has happened during that time. It usually lasts 2-3 seconds, and I've disabled both my firewall and anti-virus trying to see if that was the problem and no luck. This happens in CSS, DOD:S, and FF. It only seems to happen in online source games. Anyone have an idea of how to fix this? I've checked the rates and everything looks fine. This was NOT happening last Friday before I reformatted my computer, it has only been happening since. All drivers are fully updated.
*Updated with some of the DXDiag*
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System Information
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Time of this report: 9/14/2007, 16:15:19
Machine name: GAMINGRIG-1
Operating System: Windows XP Home Edition (5.1, Build 2600) Service Pack 2 (2600.xpsp_sp2_gdr.070227-2254)
Language: English (Regional Setting: English)
System Manufacturer: System manufacturer
System Model: System Product Name
BIOS: BIOS Date: 04/28/06 13:01:45 Ver: 08.00.12
Processor: AMD Athlon(tm) 64 FX-57 Processor, MMX, 3DNow, ~2.8GHz
Memory: 2048MB RAM
Page File: 375MB used, 3564MB available
Windows Dir: C:\WINDOWS
DirectX Version: DirectX 9.0c (4.09.0000.0904)
DX Setup Parameters: Not found
DxDiag Version: 5.03.2600.2180 32bit Unicode

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DxDiag Notes
------------
DirectX Files Tab: No problems found.
Display Tab 1: No problems found.
Sound Tab 1: No problems found.
Music Tab: No problems found.
Input Tab: No problems found.
Network Tab: No problems found.

--------------------
DirectX Debug Levels
--------------------
Direct3D: 0/4 (n/a)
DirectDraw: 0/4 (retail)
DirectInput: 0/5 (n/a)
DirectMusic: 0/5 (n/a)
DirectPlay: 0/9 (retail)
DirectSound: 0/5 (retail)
DirectShow: 0/6 (retail)

---------------
Display Devices
---------------
Card name: NVIDIA GeForce 7950 GX2
Manufacturer: NVIDIA
Chip type: GeForce 7950 GX2
DAC type: Integrated RAMDAC
Device Key: Enum\PCI\VEN_10DE&DEV_0294&SUBSYS_035B10DE&REV_A1
Display Memory: 512.0 MB
Current Mode: 1680 x 1050 (32 bit) (60Hz)
Monitor: Plug and Play Monitor
Monitor Max Res: 1600,1200
Driver Name: nv4_disp.dll
Driver Version: 6.14.0011.6344 (English)
DDI Version: 9 (or higher)
Driver Attributes: Final Retail
Driver Date/Size: 8/17/2007 16:23:00, 5860736 bytes
WHQL Logo'd: n/a
WHQL Date Stamp: n/a
VDD: n/a
Mini VDD: nv4_mini.sys
Mini VDD Date: 8/17/2007 16:23:00, 6842208 bytes
Device Identifier: {D7B71E3E-41D4-11CF-A66B-502300C2CB35}
Vendor ID: 0x10DE
Device ID: 0x0294
SubSys ID: 0x035B10DE
Revision ID: 0x00A1
Revision ID: 0x00A1
Video Accel: ModeMPEG2_A ModeMPEG2_B ModeMPEG2_C ModeMPEG2_D ModeWMV9_B ModeWMV9_A
Deinterlace Caps: {6CB69578-7617-4637-91E5-1C02DB810285}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalStretch
{6CB69578-7617-4637-91E5-1C02DB810285}: Format(In/Out)=(UYVY,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(UYVY,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalStretch
{6CB69578-7617-4637-91E5-1C02DB810285}: Format(In/Out)=(YV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(YV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalStretch
{6CB69578-7617-4637-91E5-1C02DB810285}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalStretch
Registry: OK
DDraw Status: Enabled
D3D Status: Enabled
AGP Status: Enabled
DDraw Test Result: Not run
D3D7 Test Result: Not run
D3D8 Test Result: Not run
D3D9 Test Result: Not run

-------------
Sound Devices
-------------
Description: SB Audigy 2 ZS Audio [E480]
Default Sound Playback: Yes
Default Voice Playback: Yes
Hardware ID: PCI\VEN_1102&DEV_0004&SUBSYS_20021102&REV_04
Manufacturer ID: 1
Product ID: 100
Type: WDM
Driver Name: ctaud2k.sys
Driver Version: 5.12.0001.1196 (English)
Driver Attributes: Final Retail
WHQL Logo'd: n/a
Date and Size: 8/11/2006 14:45:38, 499584 bytes
Other Files:
Driver Provider: Creative
HW Accel Level: Full
Cap Flags: 0x0
Min/Max Sample Rate: 0, 0
Static/Strm HW Mix Bufs: 0, 0
Static/Strm HW 3D Bufs: 0, 0
HW Memory: 0
Voice Management: Yes
EAX(tm) 2.0 Listen/Src: Yes, Yes
I3DL2(tm) Listen/Src: No, No
Sensaura(tm) ZoomFX(tm): No
Registry: OK
Sound Test Result: Not run

Just a blind guess, but have you tried turning the power saving for HDD's off?

[Gravy]

Nope, it's set up to be always on. Thank you for your suggestion however.

[Commander]

Try some older drivers (I think the 93.71 were official for a long time)

Try disabling one of the graphics cores (I dont know if you can or not)

Try underclocking the core/memory on your video card

[Gravy]

Yeah I've been considering the old drivers. Only thing that really pisses me off is that between Bioshock's release (coincides with new Nvidia drivers) and 1 week ago, I had 0 problems with this, only after the reformat did it start having fits every 10 minutes.
*edit* After reverting back to the previous drivers, I've had to go back to the new beta ones. I run at a 1680X1050 resolution, but for some reason it thinks my widescreen monitor isn't widescreen so it scrolls to the side and back.