Running LW 2.9.11, OS 10.2.6, and with "FORCE IP" checked, whenever I crank up this puppy, LW autoloads the new IP that my ISP is dishing out. I'm on a RoadRunner cable and using DHCP: they change the router evertime I power down/up. Same thing when I land line dialup (after changing some settings, of course) with Earthlink.

I go to "http://www.whatismyip.com" and that way, I know what my true IP is, looking from the outside, in. LW makes the change for me automatically, when I have Force IP checked, and it is always right. However, I might know just enough to get myself in trouble. I've learned to leave LW running several hours, not just power on for a little while. I've also learned to "remove" some connections in the connections screen, if nothing much is happening in sufficient time, and new ones will be assigned. Hope this helps.