For faster downloads change your port settings to 80.

Go to the tools menu in limewire and select options.
You get a new window, in this double click on advanced then firewall config.
You need to change the Listen on Port to 80 and use manual port forwarding and change this to 80.

If you want LW pro but are unsure if it will make any difference...

Simply search for it, if you notice a difference then support the cause by paying a small fee.

Best regards

Marc