I installed nvidia-glx for the 2.6.22 kernel and I got the same error. The 'modprobe nvidia' just refuses to work. I downgraded it to 2.6.20.5-16, and it works properly. So as it stands, nvidia-glx and nvidia-glx-legacy don't seem to work for the 2.6.22 kernel and my GeForce 4 MX 440 card.
I installed nvidia-glx for the 2.6.22 kernel and I got the same error. The 'modprobe nvidia' just refuses to work. I downgraded it to 2.6.20.5-16, and it works properly. So as it stands, nvidia-glx and nvidia-glx-legacy don't seem to work for the 2.6.22 kernel and my GeForce 4 MX 440 card.