Just installed the wallet and encrypted it.
Now it won't let me unlock it, I can just see "encrypt" under settings tab as being shaded. There is no unlock option at all.
I can unlock it via console but what can I do to get unlock option in my wallet?
what's the problem of keeping your wallet permanently encrypted? Than it is bad?
If you need to send a coin, you enter a password and everything turns out.
(if this is your wallet, and you did not steal it

)
If you really want very much to get a non-encrypted wallet again - move the wallet.dat to another folder, start the program again - a new wallet.dat will be created. Get a new address, write it down, move the wallet.dat again to another another folder. Return the old wallet.dat to the place and send your coins from the old wallet to the new one.
probably this is wrong, because you will have to pay for the transaction.
Another way is to export the private key, delete the wallet.dat and then import the your priv key.
But it will take a little longer time.