Winckers,
Tiscali might have something to do with your problem Have a look through these links & see if anything helps.
Tiscali & Limewire
can't connect between 5pm-11pm
I have found a solution to getting Limewire to work with Tiscali

If Tiscali are causing the problem (some people just can't seem to connect & some eventually can), there might not be much you can do. One of those threads above tells you how to change ports...see if that works for you.
Here are a few things to try as well, if you like.

Make sure that your XP firewall is configured to allow LW.
Have a look at these instructions for port forwarding. Don't forget the step of setting up a static IP address.
Port Forwarding for the Netgear DG834GT
LW's listening port, port in the 'manual port forward' box & port forwarded within a router must all be the same number.

Reinstall this version of Java. Use the JRE offline installer & remove your current Java version before you install this one.
Java SE Downloads - Previous Release - JDK 5

setupkcw,
Please give us your details, if you want us to try & help.
System details - help us to help you (click here)