LW isn't really working again. I am not getting any search results whatsoever.

My router does support UPnP. It is enabled. The UPnP option is chosen in LW as well.

Now I am constantly getting the message that "LW is currently connecting to the network. Your search results may not return many results until you are fully connected to the network."

Directly followed by the error message, "Your machine does not appear to have an active Internet connection or a firewall is blocking LW from accessing the internet. LW will automatically keep trying to connect you to the network unless you select 'Disconnect' from the File menu."

The firewall icon remains as well.