strange behaviour regarding opengl

[tenorism]

When I login for the first time everything works ok and I get :
[email protected] ~ $ glxinfo |grep OpenGL
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: ATI MOBILITY RADEON X600
OpenGL version string: 2.0.6747 (8.40.4)

But when I logout and login again (not reboot) opengl switches to Mesa
[email protected] ~ $ glxinfo |grep OpenGL
OpenGL vendor string: Mesa project: http://www.mesa3d.org
OpenGL renderer string: Mesa GLX Indirect
OpenGL version string: 1.4 (1.5 Mesa 6.5.2)

And I kill the X server to work ok again
Any ideas?
I am using 3.4f mini

[freeallbadgers]

what does eselect opengl list , return?

[tenorism]

underworld tenorism # eselect opengl list
Available OpenGL implementations:
[1] ati *
[2] xorg-x11
[3] nvidia

[freeallbadgers]

that IS weird

[freeallbadgers]

what ati-drivers, xorg etc??

[tenorism]

Sorry it took me so long to answer back. Usual thing. Went on a business trip and then forgot everything.
Solution to the problem was an upgrade to ati-drivers and everything works fine.