I am just wondering... I have been with comcast for years now all the sudden they keep changing my IP address. Is this happening to you? I have been through 1 new IP a week. Why do they do this? Its not really a good thing, because I keep loggin in with different IPs in this forum and other places
Has your connection been going up and down a lot lately? Almost all providers have their residential clients on a dynamic IP address and when the lease on the address expires you get a different one from the pool. This is normal and should not cause any problems with most sites. If you need a static IP address you will have to ask your ISP for one (they generally charge you a fee for this). Using IP addresses for authentication is bad security practice anyway. If you use a service that does this you should inform them that you have a dynamic IP and need an alternative solution.