FBO with RGBA32F texture supported?

Hi, I use the nvidia driver 7667 under linux and try to get a FBO with a color attachment which is a RGBA32F texture. But the driver tells me allways its not supported? Is this really not supported or is maybe a bug in my code?

thanks and regards

marco

well, it depends on your hardware. texture_float are available on very few hardware

check here:
http://www.delphi3d.net/hardware/extsupport.php?extension=GL_ARB_texture_float