ftpd is slow

[Eugene]

Hello All.

I have an ftpd on both my server machines, one is running FreeBSD 4.7 
and the pther one is running DragonFlyBSD 1.6.0.
The problem is that ftp replies on requests with a great delay in both 
cases. The delay is about one minute, and there is no matter,
if the request came from a local network or from the Internet.
The CPU load of those machines is <10 %, and network load is rather 
small too.
If someone can tell me how to improve performance on a DragonFly machine?

--
Sorry for my poor English.