Working Parental Controls Must Be Priority

My son is old enough to navigate the web on his own. He's has his own environment with a customized desktop image (his pick, of course) and custom links (that I've approved). Perfect for him and a great use of parental controls. Until recently he's never wanted to spend so much time on the computer where I needed to control is usage in a day. Leopard provides a way to lock down the hours of usage as well as the duration of time during the usage period. Sound great so far, right? After creating those settings, I started noticing that my son was on for more that the designated amount of time. I noticed he could login during hours he shouldn't be able to. Leopard was telling him he could next login at 12:00 AM when the time should have been 8 AM. Apparently these were known issues that have been corrected with 10.5.3. Apple should realize that Parental Controls working correctly are essential. I trust Apple to be a secure and reliable product when it come to security, but even more important to know that it's secure for my children. Parental Control fixes must be a priority that are rolled out as soon as they are available. Safety of children on the Internet should not be based on a release cycle.