Emmanuel Fusté [off-list ref] :
[..]

Could this bug fix from Stephen Hemminger be another track to follow ?
http://marc.info/?l=linux-netdev&m=118048588011069&w=2
If you think so, I could give it a try whitout applying the "spin_lock_irqsave" patch.

You can apply it too but Stephen's patch addresses a different issue and
pcnet32 does not use netif_tx_locking (it could/should though).

-- 
Ueimor