Just tried Firefox beta2 today on VirtualRiscPC. I was dreading a long ReadMe with detailed installation instructions but it was all concise and simple. Created the /mozilla directory in UnixHome, tried running it. !Firefox told me to update Tinct and SharedULib, so quickly found these using Google, and then it ran fine. Must have taken me all of four minutes.
It is one thing seeing Firefox demonstrated at a show, but quite another trying it out on your own machine. Well done Peter!