parental control problems

[ReginaMoney]

When I set parental controls to automatically prevent access to adult web content, it also seems to be causing a problem with access to gmail, ebay, and some other websites. However, instead of getting the "oops!" message you get when you try to access an adult website, the page says, "Failed to open page. Safari can't find the server." When I change parental controls to allow all web content, the problem goes away. When I change it back, it comes back, so I'm sure it's the parental control setting.
I've already tried adding ebay, gmail, etc, to the list of allowed websites in parental controls, but it has not worked. How can I fix this problem?

Also, my mac is 10.5.6, and you don't seem to have that as an option, so I have to pick one.

[BreatheCarolina]

I'd honestly not use OSX's built in parental controls at all. Instead I suggest using OpenDNS. It is easier to customize and tailor to your personal preferences, its easy to use, and its free. They have a very painless step-by-step setup process, a comprehensive FAQ, and good help forums should you need them.

Link (once again):
OpenDNS.com