Oh, sorry - of course it would have been helpful for me to mention the screen I was talking about.
Yes, I mean in the Administration screens, where user accounts are viewed, added and edited.
I can only see 5 users per screen and there is no way to navigate into the list alphabetically like I see on many user/contact applications, a simple A|B|C|D|E|F... list of links at the top of the screen would suffice.
I also sometimes have blank pages, where the next-to-last page will have only three users or so on it, and then the very last page will be blank. That happened when I had five pages of users, but now that I have nine pages of users I no longer have the problem.