Portable Firefox 1.5.0.5 has been released  by developer John Haller.  Firefox Portable (the official name) can be installed on a USB flash drive and run on any computer without leaving any traces behind when you leave.  This new release can be run from a CD if you prefer that over a USB drive or iPod, update support has been added as well as in-place upgrades.  If you like to live on the edge there is a preview version of Firefox Portable 2.0 Beta 1 Preview available.

(via DesktopLinux)

-jk