Comment 4 for bug 55919

Sorry, I didn't see your question earlier. The easiest way is to edit /etc/network/interfaces, add a static iface stanza (see 'man interfaces' for an example), and type 'sudo ifup eth0 down; sudo ifup eth0 up'.

Anyway, it's sort of irrelevant in this case, as I'm going to treat this as a duplicate of bug 54163, which I'll soon have fixed in Edgy. I believe that the workaround is to avoid hitting the back and/or next buttons more than once in quick succession.