Trying to connect to LW, getting the message:

Limewire is currently connecting to the network. Your search may not return many results until you are fully connected to the network.

Then no connection. Started about 2 weeks ago ~ 6/20/08. Installed LW 4.18 hoping for quick fix. My system info:

Win XP SP2
Zone alarm firewall
1 GB RAM
174 GB free HD space
cable modem
Belkin wireless G router (3 yrs old)
connect from home Rochester NY USA
LW version 4.18
ISP Time Warner Roadrunner
test worked!
not sharing connection
experienced user
yes on the brick wall ( windows firewall off)
UPnP enabled
Security programs: AVG 8.0, Zone Alarm 7.0,
Windows defender, Spybot S&D
Ad Aware 2007

I have used a few different versions of Limewire for several years and have had no problems until now. Read all the stickys, could this be an ISP issue?