If the coins have been in your wallet for 30 days, and you have more coins than you have set your 'reservebalance' in the .conf file, then you should be POS mining. You can confirm for sure that you are currently are mining if you see a balance next to "stake" in the client. This is how much of your balance is unavailable while it generates POS. Of course, you can also leave your client for a while and come back to see a POS 'deposit' in your transaction list. Not sure if there are other ways to confirm, but it's practically automatic provided that those requirements are met and you have a connection to the network.
Thanks.
I haven't seen anything next to "stake" (except 0.00) just yet
have i done something wrong
i can see 'unlocked for block minting only'
but i can only see 0.00 next to stake