Ubuntu :: 10.04 Freezes Or Crashes Multiple Times?

[Staff Note: This thread was spun off from here: HOWTO: Purge and Reinstall Grub 2 from the Live CD This solved the Grub problem but the crashes continue.]

Just as I get up and running again my 10.04 (64 bit) either freezes up totally, closes all windows that are open, fails to restart or shut down forcing a restart.

There's no pattern to it, i might be using the gimp or checking thunderbird emails, possibly just surfing or running bluefish. Nothing major and I'm not one to go delving under the bonnet so to speak and start tweaking things. I have the AWN dock installed and run a dual monitor setup.

Everytime it's crashed, the damn thing doesn't reboot, I get the init =bootarg message I've been reading a lot about and once again I have to run the liveCD and spend several minutes farting about purging and reinstalling grub.

I despise Windows, overall I am enjoying my ubuntu experience but things like this stop me getting any work done.

My PC ran fine for the last 2 days then suddenly it's playing up again. It's not an old machine, quad core processor, plenty of RAM.

I am having to back stuff up as soon as I do it due to so many crashes per day. I have reinstalled the OS and started again from scratch 4 times now in the last month.

The last thing I want to do is go back to Windoze but I am seriously running out of patience with ubuntu.

Boot Info Script Results:

Code:
# Boot Info Script 0.55 dated February 15th, 2010

============================= Boot Info Summary: ==============================

=> Grub 2 is installed in the MBR of /dev/sda and looks on the same drive in
partition #1 for /boot/grub.
code....