I was not having any problems whatsoever with new version and patch 1. As soon as I installed patch 2 started having disco issues.
Offline is no problem.
Dueling arena mild problem.
EW/MW/LW major problem disco every time within 5 minutes.
Cable ISP says everything looks good.
Frame rates stay steady at about 75.
settings prior to patch 2

It's seems if I turn off my plane bump map I do better.
current settings

System Information
------------------
Time of this report: 2/1/2012, 17:16:51
Machine name: JAMES-PC
Operating System: Windows Vista™ Home Premium (6.0, Build 6001) Service Pack 1 (6001.vistasp1_gdr.101014-0432)
Language: English (Regional Setting: English)
System Manufacturer: Dell Inc.
System Model: Inspiron 530
BIOS: Phoenix - AwardBIOS v6.00PG
Processor: Intel(R) Core(TM)2 Duo CPU E6550 @ 2.33GHz (2 CPUs), ~2.3GHz
Memory: 3070MB RAM
Page File: 2216MB used, 4147MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 10
DX Setup Parameters: Not found
DxDiag Version: 6.00.6001.18000 32bit Unicode
------------
DxDiag Notes
------------
Display Tab 1: No problems found.
Sound Tab 1: No problems found.
Sound Tab 2: No problems found.
Input Tab: No problems found.
--------------------
DirectX Debug Levels
--------------------
Direct3D: 0/4 (retail)
DirectDraw: 0/4 (retail)
DirectInput: 0/5 (retail)
DirectMusic: 0/5 (retail)
DirectPlay: 0/9 (retail)
DirectSound: 0/5 (retail)
DirectShow: 0/6 (retail)
---------------
Display Devices
---------------
Card name: NVIDIA GeForce 9600 GT
Manufacturer: NVIDIA
Chip type: GeForce 9600 GT
DAC type: Integrated RAMDAC
Device Key: Enum\PCI\VEN_10DE&DEV_0622&SUBSYS_C8563842&REV_A1
Display Memory: 1779 MB
Dedicated Memory: 499 MB
Shared Memory: 1279 MB
Current Mode: 1440 x 900 (32 bit) (60Hz)
Monitor: Generic PnP Monitor
Driver Name: nvd3dum.dll,nvwgf2um.dll
Driver Version: 7.15.0011.8120 (English)
DDI Version: 10
Driver Attributes: Final Retail
Driver Date/Size: 12/25/2008 23:08:00, 6070272 bytes
WHQL Logo'd: Yes
WHQL Date Stamp:
Device Identifier: {D7B71E3E-4562-11CF-4A44-5DE801C2CA35}
Vendor ID: 0x10DE
Device ID: 0x0622
SubSys ID: 0xC8563842
Revision ID: 0x00A1
Revision ID: 0x00A1