>When I hit the "new since last visit" button, it always says 0/0/0/0 in Visual Fox. However, I look at the dates on some of these messages and I'm quite certain I haven't been in here since then. Thanks!

This represents the number of new items since your last login. If you try that after a login, if will be all zeros because the login date time has just been reset after a login. This is mostly used to know what's new in other forums.