Orca the latest ff3

[josh techlab cviatlanta org]

Hi,
I'm new to testing firefox, and need help making sure that I'm using the latest components.
I'm currently using
ftp://ftp.molla.org/pub/mozilla.org/firefox/nightly/latest-trunk, and the pre3 linux us binary.  Is there a 
newer 
firefox?  If so, where are the sources?  I have tried to find documentation on the developer site, but it all 
seems to 
relate to old mozilla application suite.

Cheers,
Josh