I run an older PC, Pentium3 w/ 512M memory which does everything I need but Iceweasel is killing me since the last couple of upgrades. It's become such a memory hog that it ties up the system for minutes at a time. How can I backup to the version of a couple of months ago? Thanks, Mike McClain -- "It is the duty of the patriot to protect his country from its government." - Thomas Paine