Good post on Alfresco Installation

http://www.howtoforge.com/how-to-install-alfresco-community-3.3-on-ubuntu-server-10.04-lucid-lynx
http://shane.jaducana.net/2010/installing-alfresco-3-2r2-on-ubuntu-9-10-karmic-koala/
http://wiki.alfresco.com/wiki/JVM_Tuning
http://wiki.alfresco.com/wiki/Best_Practices