Comment 3 for bug 787859

I solved this problem by using the xorg-edgers ppa. Now xorg hovers around 150MB, which is way better than 500MB. The problem is that this is not really a fix, and xorg-edgers comes with it's own host of issues. I've been using it with out issue for a week or so, but with ppas like this that could change any minute...

https://launchpad.net/~xorg-edgers/+archive/ppa

32bit Kubuntu 11.04

GeForce 6150SE nForce 430

$ lscpu
Architecture: i686
CPU op-mode(s): 64-bit
CPU(s): 2
Thread(s) per core: 1
Core(s) per socket: 2
CPU socket(s): 1
Vendor ID: AuthenticAMD
CPU family: 16
Model: 2
Stepping: 3
CPU MHz: 1250.000
Virtualization: AMD-V
L1d cache: 64K
L1i cache: 64K
L2 cache: 512K
L3 cache: 2048K