They have a link to a list of OCI's that are approved and have not been picked up. You can find the list here OCI Ready at MHA
Wowwww Washington embassy seems to be in a hurry to clean up their tables with approved OCI cards.
I had my OCI approved around end of December, 2010, but I did not send my US PP because I had made my travel plans around that time.
Here's my OCI stamping time:
Sent US PP for OCI stamping on 3/14/2011 via USPS Priority Mail
Package received by Washington Embassy on 3/16/2011
Received my US PP with OCI stamp and OCI card via UPS Overnight Shipment on 3/18/2011