Update warning my computer crashes now.

I just went threw all my updates last night which included FCP my tiger OS and everything else my computer would say to update when i hit update now.

Prior to this update everything worked great.
No issues no problems except for in COLOR

Every time i sent to Color or exported an MXL it would crash Color and i was stuck.

So i was wiling to try anything
and the updates fixed it so i was happy.

However as of this update i have Crashed my entire computer twice during FCP renders , and surfing the net at the same time. Out of no where it reveals this darkish screen on my monitor and the power button appears.
Reminds me of

in an echo " THE BLUE SCREEN OF DEATH"

So Be very carful i dont know what update is kiling me the most but

It sucks.

Thought you guys may like to know.

This is just crazy i just had another comuter shut down only 5 minutes after I posted my previous posting.

This maybe serious.

Any suggestions?
I want to revert all my updates
is thee any way of doing this please.