Unfortunately no. And since many ISP's shape p2p sharing bandwidth, you would really need to search around for an ISP that does not if you decided to change.

There's been a number of users who used the same ISP. One or two were using the same services around the time the company changed its practices, and noticed the sudden firewall and disconnection issues.

The only possibly option I could think of would be using a proxy but even then no guarantees. A Fix for those whose ISP's block Limewire pages 1 - 3 which have links to alternative instructions.