NVDA(OpenGL): Channel exception! and Channel timeout! - Have relation with Safari?

There are several discussions on the error NVDA(OpenGL): Channel exception! and Channel timeout! recorded in the Console. In my case, started after updating to Mac OS X Lion. There is a lot of strings about this:

https://discussions.apple.com/thread/1916253

https://discussions.apple.com/thread/1916253

https://discussions.apple.com/thread/1916253

And some major revision @: http://highmac.com/how-to/fix-kernel-nvdaopengl-channel-exception/

I have tried the following:

- Reinstallation of Lion.

- Reinstallation of Snow Leopard system update (10.6.8 and Safari 5.1).

- Reinstallation of Lion without installing Adobe Flash.

After a series of settings, I have a question.

I am not Cocoa or Mac platform programmer, but I want to know if there is possible that it refers to a set of instructions in the latest version of Safari (5.1) related to the use of OpenGL. Sometimes, when I use Safari in some moment of my work session, it happens that the OS freezes. The program can be loaded, in background or it can occurs after having closed it. I know that this error has been linked to various situations for several years, but I would like to know if anyone has this experience.

Meanwhile, I use another browser, but it is unconfortable to have this -literal- sensation of inestability.

Thank you very much.