Authentication is very long

[Zakki Ashshidiqi]

I install vpopmail 3.4.11-released on FreeBSD 4.0. I don't when is it start ... but it's look like after is use mysql, the authentication is very long. More than 30 seconds. But after authenticated the downloading process is fast enough. My email client is microsoft outlook express 5. I try to login from sqwebmail and it's really fast. I could say it less than 1 second. Is there any clue ?     senter.