I signed up right before the deadline, in the last few days in February. We did call at that time to confirm everything and was told all was set. I asked about how long it would take, and was told it was usually about 4 weeks, but that they had "a big backlog" and that it would be longer than that. They wouldn't say exactly how much longer, so I figured 8 weeks, and the end of April will be 8 weeks. So I'll probably give it a few more days (I guess I'll wait until I finish my taxes next week

and then contact them and let them know they can either give me a fairly firm delivery date, or a refund. If the delivery date passes with no PC, I'll get the refund.
In any case I'll post here with the results when I get 'em. Thanks to those that replied.