The same thing, the same problem. :/
freezing et cetera - terrible. Anyway I'm using right now nv and all is ok.
I've tried use to nvidia-glx (not workin' :/ ) and nvidia-glx-new from repository (freezing every moment :/ ).
Of coz I read the stick topic, but idle=pool and maxcpus is not for me (why I must to use only 1 core? O_o ).
I've got laptop with dual core 'n' GF GO 74oo.
Solved: Install older version of driver by Envy, use this: ftp://download.nvidia.com/XFree86/Linux-x86/96.43.01
Thnx for nVidia
Now I can use my graphic card - GF GO rocks