A reader using one of the (many) cards reported on with OS X Tiger (and earlier) on the OS X PCI Ethernet Card Compatibility Reports page here asked I post a request for feedback from users of 3rd party Ethernet cards that have upgraded to OS X Leopard. (Some cards had native support, others used addon drivers).
If you're using a PCI NIC card and upgraded to OS X Leopard, let me know the details (Card brand/model, if natively supported or drivers used, Mac model and if you've seen any pros or cons). Thanks.