Flashplayer 10.2 crashes on PC with 2 different NVIDA cards (Linux 32bit)

Question

After upgrading to Flashplayer 10.2.152.26, every time I wanted to watch a flash video the Firefox flash plugin crashed. After doing some research, I was able to nail the issue down:
I use a dual seat setup (2 separate X servers with 2 mice and 2 keyboards) on a PC with 2 different NVIDIA cards: one is a geforce 8 model which is supported for Flash GPU acceleration, the other is a Geforce 7 model which is not supported.
Every time you want to watch a flash video on the Geforce 7 the flash plugin crashes. On the Geforce 8, everything is working fine.
I assume Flash GPU acceleration is used for both cards although the  Geforce 7 doesn't support it - which leads to a crash on that screen.  Maybe the NVIDIA driver (260.19.36) is also involved in incorrectly  using GPU acceleration.
Workarounds:
1. Downgrade: Flashplayer 10.1.82.76 works.
2. Disable write access to /dev/nvidiactl.
P.S. I also filed a bug to the Adobe Bug System.

Answer 1

Maurizio, 
I thought that I'd respond to your inquiry here instead via the e-mail.  I apologize for the delay in getting back to you as I've been extremely busy.  Anyway, admittedly, I am not tech-savy.  As a retired police officer and current sales representative, I just do not have the technical background to explain exactly what I did and how managed to repair the BSOD.  I stumbled across a post on my Google search where someone had suggested to go to Dell's website, enter your "service tag," which is essentially a build order, and from that, Dell's site was able to tell me which updates were applicable to my system and to be honest with you, I installed all of them and my computer is working flawlessly. 
I am not sure whether or not your manufacturer has a similar support site, but if it doesn't, I would like to think that you print out your system profile and then go to the appropriate manufacturers' sites and obtain the most current drivers from them.  For what it's worth, here are the downloads that I installed:
Intel G31/G33/Q33/Q35 Graphics Controller
Intel Matrix Storage Manager
Intel 825xx 10/100 Platform LAN Connect Device
Intel Chipset Software Installation Utility
OPTIARC AD-7200S HH SATA Trayload DVD+/-RW
Realtek ALC888 HD Audio
I did not list the Dell specific driver downloads as they wouldn't apply.  I also realize that some of the driver updates that I listed most likely had nothing to do with the resolution of my BSOD problem but I can say that by installing the latest drivers available for my system, I no longer receive the BSOD message.  My hope is that by posting this reply is that someone with the knowledge and expertise in this area can expand on my post by suggesting solutions to how you and others can identify the likely culprit and fix your machines.
Good luck!
Paul