What is the "Immature:" field? Finally got my first block (so I think) and had 50 WIKI incoming, but it doesn't show in confirmed or unconfirmed. Randomly it will pop up underneath those two fields with Immature: 50 WIKI. I have never seen that before in other wallets.

Edit: Make that 2 blocks, but they are both in the same state.

2nd edit: Not I have had 3 of these, two which still show in transactions and one that disappeared.