Discovering Egypt
Discovering Egypt: Old Kingdom
This article list the rulers, dynasties, and major events of Egypt's Old Kingdom from the 1st dynasty (3100-2890 BC) to the 8th dynasty (2181-2125 BC).
BBC
Bbc History: Ancient History: Egyptians: Fall of the Egyptian Old Kingdom
A nice article giving reasons for the fall of the Old Kingdom. Among the reasons discussed are: weakness of centralized government, climatic changes and more. Archived.