WINDOWS 2000 AND MICROSOFT UPDATES

I have unpredictable hangs and “BSD’s” (blue screen of death) at several computers on the LAN (Server 2003).
The last one, was working fine for several months. Last week, I have updated W2K, and activated automatic updates, and there begins the problems with this PC. Service Pack 4 was installed, but there were several updates in the last months that the PC does not have at that time. Is there any known issue with W2K and MS updates?
Please, Help…!!!!