LX network woes

Hi, In the past, I've run my LX on a 10Base5 network using a transceiver on the MII connector. Today, I opted to move it to a 10BaseT hub -- using the "internal" TP connector (adjacent to the ISDN ports). Long story short: it doesn't work. :> Observations: - hub light does not illuminate when cable to LX is plugged in - hub light illuminates when plugged into *second* I/F on the LX (a narrow SCSI + ethernet SBUS card) - able to ping other hosts if I bring this second I/F up i.e. cable and hub port are good - attempts to ping other hosts when using the "first" I/F (prior to configuring the second I/F) result in the "other" host's ARP cache catching the MAC of the LX (i.e. the Tx pair from the LX appears to be intact) -- thogh no replies received Is this some configuration quirk that I have overlooked? (note that the hub light should? illuminate even with NO software running) Perhaps related to the autoselect characteristics of the built-in I/F?? Or, is something broken in the LX (connector pins seem intact)? If the latter, are there any bits I can salvage from the Classic that is sitting in my recycle pile? (or, should I simply add the LX to that same pile? :< ) [note the option of using the second I/F is not viable as that SBUS card will be removed, soon] Thanks! --don