If you are still in the habit of locking your phone and are now worried that your data can now be comprised (because Content Protection is now disabled), I would highly recommend setting a password on your phone. By creating a password, you are forced to type in your password whenever the phone is locked (instead of a combination of two keys, like most phones). By default, your phone is locked whenever you power on your phone. The Blackberry has a threshold of 10 tries before it will permanently erase your data on your phone, which is good if someone tries to steal it. If you are afraid that you will reach 10 tries quickly by simply accidentally pressing the keys while it’s in your pocket, you won't. At some point, it will start displaying your password as you type instead of hiding the characters (in the event that you are incorrectly typing it for one reason or another). If the password being entered is still not correct, there is even a built-in failsafe on the phone that will make you type in "blackberry" every couple of failed attempts, or it won't continue.
However, keep in mind that your failed attempt counter will not reset until you have correctly typed in your password. In fact, it won't even reset the counter if you power off your phone and back on again.