> I'd like to hear how this kind of problem is experienced and solved
>by what kind of policies. Do I need to always set new users' names less than 9
>characters? Does the problem can be solved in other ways? It's more than
>just curious. Thanks in advance.
This really depends on your operating system and other things. I've found
that having login names greater than 8 characters tends to break a number
of utilities in strange and subtle ways. If you use NIS for passwd map
distribution, it doesn't work well at all.
The best advice I've seen is: Try it, and see if it works. If it doesn't,
(as in your case), then don't do it. As a general rule, I think it's probably
a good idea to keep login names to 8 characters or less.
--Ken