1. A management system for at least one computer system, comprising: a plurality of agents residing within managed nodes of a plurality of different products used within the computer system; a system manager for said management system, said manager operating across the different products; and a data storage device storing at least a knowledge base, said knowledge base containing information pertaining to problems regarding the different products, the information pertaining to the different products including at least one collection of rules, and wherein the information within said knowledge base is updated based on contributions submitted by at least one user, wherein the knowledge base includes a plurality of separate knowledge domains, each of the knowledge domains being a logically separate piece of knowledge which can be installed and uninstalled as desired, and wherein said manager utilizes the knowledge domains and the at least one collection of rules in monitoring at least a plurality of the different products used within the computer system.
1. A management system for at least one computer system, comprising: a plurality of agents residing within managed nodes of a plurality of different products used within the computer system; a system manager for said management system, said manager operating across the different products; and a data storage device storing at least a knowledge base, said knowledge base containing information pertaining to problems regarding the different products, the information pertaining to the different products including at least one collection of rules, and wherein the information within said knowledge base is updated based on contributions submitted by at least one user, wherein the knowledge base includes a plurality of separate knowledge domains, each of the knowledge domains being a logically separate piece of knowledge which can be installed and uninstalled as desired, and wherein said manager utilizes the knowledge domains and the at least one collection of rules in monitoring at least a plurality of the different products used within the computer system. 15. A management system as recited in claim 1 , wherein said management system is for a plurality of computer systems, and wherein said manager is central and operable across the different products on the different computer systems.