OK, so then why did I generate my first transaction in a day and a half and my second transaction hasn't yet been generated -- after something like 4.5 days?  That first transaction has been accumulating confirmations in the status and is up to 1158.  Am I supposed to tell the client to move on?  Does it have to go to a certain level before moving on to generating the next transaction block?  It still lists a fluctuating khash/s figure so I assumed it was working on the next block(s), but there's clearly something (probably fundamental) about Bitcoin that I'm not getting.