Nvidia-glx crash (segfault) on X startup

[KeenEars]

lsb_release -rd:
Description: Ubuntu karmic (development branch)
Release: 9.10

My system doesn`t boot to KDE4 login screen this morning. I remember I`ve installed some updates yesterday and will include the dpkg log. Starting from today I can`t use nvidia-glx (tried both 185 and 173), because X crashes on Xserver start and leave me with blank screen and blinking cursor. I can`t even jump to consoles, because of the system hang.

Vesa driver works ok. NV driver starts working if I remove (purge) the nvidia-glx and nvidia-185-kernel-source, otherwise it crash after login and sets me back to login screen (looks like trying to use libGL with it).

Not sure, what package to blame: I`ve downgraded the Xorg to
xserver-common_2%3a1.6.3-1ubuntu5_all.deb
xserver-xorg-core_2%3a1.6.3-1ubuntu5_i386.deb
instead of
xserver-common_2%3a1.6.3-1ubuntu6_all.deb
xserver-xorg-core_2%3a1.6.3-1ubuntu6_i386.deb
and no effect.

Used this driver packages
nvidia-173-kernel-source_173.14.20-0ubuntu1_i386.deb
nvidia-173-modaliases_173.14.20-0ubuntu1_i386.deb
nvidia-185-kernel-source_185.18.36-0ubuntu2_i386.deb
nvidia-185-libvdpau_185.18.36-0ubuntu2_i386.deb
nvidia-96-modaliases_96.43.13-0ubuntu2_i386.deb
nvidia-glx-173_173.14.20-0ubuntu1_i386.deb
nvidia-glx-185_185.18.36-0ubuntu2_i386.deb
nvidia-settings_180.25-0ubuntu1_i386.deb

In kernel log you can see various tries to launch - with nvidia 185, nv, 173, vesa...
I believe that segfault involving libc happening when using nvidia binary driver but not sure.
Can downgrading libc help me? I don`t like this idea ...

[deadmoo (deadmoo)]

I was able to use nv after removing the nvidia-glx-185 package that I was using.