Once a block is matured (101 confirmations) it goes into the queue for payment. When the next block is found, that payment is processed and sent (along with any other matured blocks waiting).

Kano does it this way to enable more efficient confirmations. What you see on the "Payments" page isn't necessarily what's been transmitted.

441517, 441552 and 441613 will transmit when the next block is found.

That help?

EDIT: Just saw fvineyard's post...same difference.