It takes more than one minute to launch Coccinella

Hi,

I installed Coccinella (version 0.96.4.1) on a Windows XP PC.
I installed the server Openfire (version 3.4.3) on a RHEL 4.5 server.
The Windows XP PC and the RHEL Server cannot access to Internet, but I don't think that it's a problem, do I?

When I try to launch Coccinella, it takes more than one minute, it's too long... And when I try to add a contact, it takes more than one minute too.
Do you know what is the problem?
Is it a network problem?

Thank you.