Searches not working quite right

[K-fab]

Two areas that I'm seeing the same issue, so I'm guessing there's a theme of some sort.

My settings from vB3.x.x haven't changed that I can figure out.

My site is low volume membership so besides having Spambot Stopper (kills 95% of the idiots), I manually moderate all new members - I do an IP Spam check on all new IP addresses. If they pass everything I'll accept them.

So, that said:

In the AdminCP, when I do a search for new members
Users
Search for Users
List Users Awaiting Moderation

It will list most of the new registrations. It seems to miss some too -
Users
Search for Users
List New Registrations - some of them don't show up in the previous search for new members to moderate.

In the same context, when doing a New Posts check on the forum, it will skip showing some of the threads that show up as flagged as unread. It's not showing all the new posts.

Thoughts or comments, please?