sshd prompt for password very slow

[vladone]

When i try to login remote on my server, receive very quickly prompt
for "login as:"
After insert my username, promt for password, is avaible after
aproximatively 10s.
This is happend in local network.
Why is so slowly?

My system: FreeBsd 5.4 release
           video 64mb
           memory 256 mb ram
           Athlon 2000 Ghz