Clean frugal installation on this System: Dell Dimension 8250, Pent 4 at 2.40GHz, 1.5GB ram, 128 MB ATI Radeon 9700 Pro graphics card with TV-out and DVI, Soundblaster Live with 5.1 audio, Intel Pro 100M Integrated PCI NIC Card, HP Photosmart 5280 All-in-One, Printer-Scanner-Copier
Installed the FF3_pack_f10.sfs which installs fine and updates without any problems to 3.0.10. It worked fine but had a problem crashing unexpectedly when accessing some sites such as MSN's hotmail.
I installed ttuuxxx's glib-2.20.0-i386.pet which apparently has solved the problem of Firefox crashing on sites that I normally visit.
This needs further testing on different hardware that is having a similar problem.