[CentOS] hp dv9000 laptop locks up sometimes

Hi all,

I have an hp dv9000 laptop (amd turion) nvidia graphics engine.
I boot with kernel options noapic nolapic acpi_use_timer_override
I also have ndiswrapper 1.48

For the most part its stable but there are times when the machine
just locks up. I am running centos 5 x86_64 with all the updates.

Anyone have a similiar machine and possible more stable OR know
of another kernel boot option to make things more stable?

Thanks,

Jerry