Unexpected network-traffic

[Christian Göbel]

Hello,
when I start the X via my personal Firewall
asks me several permissions for access to the Internet:
xterm.exe       Destination IP:127.0.0.1:Port 6000
XWin.exe        Destination IP: 130.104.1.1: DNS
XWin.exe        Source IP: 0.0.0.:Port 6000

Whatever I type in xterm within X my network-monitor shows me
extensive nettwork traffic (outgoing and ingoing) after every
single letter I type.
Is this something to worry about?

Can anybody explain me why the use of  Cygwin-XFree86 causes
network traffic whatever I type in xterm? Are there any security issues?

Cygwing 1.5.5 on Win2000pro

Thanks a lot
Christian