I have noticed this sort of thing on and off for about two or three days...

ep0 at isapnp0 port 0x210/16 irq 9
ep0: 3Com 3C509B EtherLink III 
ep0: address 00:10:4b:7a:0e:1f, 8KB byte-wide FIFO, 5:3 Rx:Tx split
ep0: 10baseT (default 10baseT)

at various times, the network locks up and I get errors like:

traceroute: sendto: No buffer space available

which persists until I do "ifconfig ep0 down; ifconfig ep0 up".

any ideas what could be causing this, and how to fix it?

	Sean.