+1 to what mc4man said, I installed nvidia-319, and everything is ok.
Code:
cariboo@alexis:~$ /usr/lib/nux/unity_support_test -p -f
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: GeForce 210/PCIe/SSE2
OpenGL version string: 3.3.0 NVIDIA 319.32
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 3D supported: yes