G4, using OS V10.37, 2Gb Ram, 240GB Discs.
Safari is the only unstable product on my entire Apple system.
Every time I try to inform, or pay a Supplier, for any product, using Safari, it crashes. Seven times on Tuesday, almost losing a 4,500 Pound Sterling machine, that I finally had to bid for with Firefox, by six seconds.

Hundreds of crash reports to Apple, totally ignored, neither answered nor queried, total disinterest.

Firefox is totally stable, never had a single problem.
My only regret is that, I cannot access without pasting the
hundreds of Web sites accumulated, that I had transferred to Safari on trust.

Most of Apple OS-freeby's, Safari, Address book, Calendar etc. are
now totally inferior, and useless to a serious business user.
Mail being the only useful exception.

Firefox is written by a thinking, questioning, interested team.
Good luck to them, Safari is well past its "Used by date."