While it may not come as much of a surprise, it's still going to aggravate owners of aging PPC Macs that the upcoming Firefox 4 browser is probably going to drop support for the older architecture. Mozilla program manager Mike Beltzner noted that the next version of the open-source browser, currently in beta, is not working on PowerPC machines now and the update will not be automatically offered to them.
Computerworld points to two separate technologies in FF4 that are standing in the way of a PPC build: the OOP