After having my storm unlocked after the screen goes blank "asleep" sometimes teh screen becomes unresponsive

My blackberry storm goes blank after having it unlocked

Don't worry about it. it is very simple to Unlock your Blackberry storm by entering Imei Unlock Code . you can get your Mep Unlock Code for Blackberry by third party or your network provider.
third party give your Imei Unlock Code within hour. but your network provider take time to give you Imei Unlock Code. and charge huge amount. you can buy Blackberry Imei Unlock Code from third party. they will charge little amount.
i hope this will help you.

That was a common problem for unlocked blackberry storm network. Try to reinstall your blackberry OS since blackberry unlock code only reset your phone network, all remains software still use old network configuration.