Network

CONFIG_NET_ETHERNET
CONFIG_NET_PCI
CONFIG_8139TOO

Well, the options say it all. There's a RealTek 8139 in this thing. Those work, but it's the worst low-end network card one could imagine. That doesn't mean the driver doesn't work, only that the RealTek 8139 chip set is broken by design; it eats a lot of CPU cycles.

Not that you'd notice that on a laptop powered by a Pentium4, but that's a different matter - at least for now ;-)