Sessions class - navite php sessions, cookies or both?

[eluser]JayTee[/eluser]
As a rule, I never never never use the cookie for anything other than the sessionid.

Here's a GREAT article that explains the issues with cookies. While most of us here don't necessarily work with sites a gigantic as yahoo, the performance hit is still the same:
http://yuiblog.com/blog/2007/03/01/perfo...ch-part-3/