I lock out channels such as the music, religion and sales promotions using the system locks. I select them, lock the system, they don't appear on the channel lists. This has worked fine for many months. Today I found that 4 or 5 of my recorded items are showing as "locked events." I can access them with my password, play them but cannot unlock them except by unlocking the entire system. I want to keep systems locks but do not want to lock any recorded programs. Any idea what is happening here?