Nvidia driver problem

[Jon Anderson]

jbander at ubuntujon:~$ /usr/lib/nux/unity_support_test -p
OpenGL vendor string:   NVIDIA Corporation
OpenGL renderer string: GeForce 6600 GT/AGP/SSE2/3DNOW!
OpenGL version string:  2.1.2 NVIDIA 270.41.06

Not software rendered:    yes
Not blacklisted:          yes
GLX fbconfig:             yes
GLX texture from pixmap:  yes
GL npot or rect textures: yes
GL vertex program:        yes
GL fragment program:      yes
GL vertex buffer object:  yes
GL framebuffer object:    yes
GL version is 1.4+:       yes

Unity supported:          yes
jbander at ubuntujon:~$
Is there a terminal request to get which operating system I'm in because 
this looks a lot like the 10.10 and it has been stable for quite a while 
but I got it through 11.04, so didn't unity start with 11.04, if so 
maybe it is unity that causes my trouble in 11.04. How do I turn off 
Unity in 11.04 or does that just take me back to 10.10 anyway. Me ,I'm 
confused and I have been told by many people here that they agree with me.