I'm still using 10.3 on my Pismo, I don't really see the point in 10.4 at the moment, but it's not like 10.4 is impossible -- it was even usable on the Pismo. Although, it's a fast G3 with a relatively huge L2 cache.

On my G4 system, 10.4 felt, acted, and in general was much faster than 10.3 though.
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