NIO and open ports not showing up during portscan

Question

Hi
I have an application that binds port 4444 and 4445 default. I can establish an conection to both ports with telnet for example and when I just portscan those ports they are detected:
$ nmap -p 4444-4445 localhost
Interesting ports on localhost.localdomain (127.0.0.1):
PORT STATE SERVICE
4444/tcp open krb524
4445/tcp open unknown
but when I try to scan the whole range 4445 disappears. Here is the output:
$ nmap localhost
Interesting ports on localhost.localdomain (127.0.0.1):
PORT STATE SERVICE
22/tcp open ssh
25/tcp open smtp
113/tcp open auth
1024/tcp open kdm
4444/tcp open krb524
5432/tcp open postgres
I reccon that this means that I will lose some connections during high load.
Does this have anything to do with the timeouts I specify for select() or is it a problem deaper down in nio?.

Answer 1

All this means is that there is something seriously wrong with nmap.