SETI is totally backed up right now. Their servers were down most of the day yesterday, and their net is again limited. While connecting to the proxy is a good idea, you have to do it before a backup starts, not during. The proxy is almost empty too, because it can't get new units, and wasn't fully stocked before this outage started, so I can't even transfer some units into new members queues.
Sorry.
I'd recommend connecting to it though, and then just waiting.
As for the screensaver vs CLI, you most likely just got lucky. I see the proxy sometimes getting 3 or 4 in a minute, then none for 12 hrs.
Edit: It looks like you might have a slight chance, the proxy has gotten a few WUs tonight.