Specifically, how can I tell whether I'm finding any shares? It's not clear from the extensive log output. The relevant line seems to be...:
Pool stales: 12% Own: 50±48% Own efficiency: 57±54%
... after about an hour of mining. I'm using poclbm as the miner.
(My hashrate is a mere 30MH/s; I'm just trialling the software until I get a payout - of any size).