> It does have less performance on an x86 machine (than the 3Com), but in 
> the case of the Qube, its the other way around by quite a huge margin :S

Hmm. At least 3c905B worked charm on my R5000 O2,
but I don't have Qube or 3c905C so there is few thing
I can help without real hardware (or detailed info). sorry.
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Izumi Tsutsui