None of my p2p softwares are working

[melitica]

I hope that someone can help me, cause i'm feeling very desperate right now. :icon_shak . I've heard of other people with the same problem, and i hope that they wore able to find a solution.
I started using p2p by downloading limewire, and it was great, i considered it fabulous for all the mp3's i needed. I had emule too, but that was for big files like games or softwares. And they use to work!! :icon_prof
But somehow out of the blue they just stopped working. None of them wore connecting to gnutella or edonkey, So i downloaded bearshare, shareaza, winmx and morpheus, same problem with them. I went to gnutella forums, shareaza support, emule.com i tried almost every solution i found, and nothing changed. I called my internet service provider and they told they weren't blocking p2p. But just to know, i changed my isp, and they problems kept there. Zeropaid is one of my last resources. I have windows xp proffesional edition, i have amd athlon proccesor. I connect trough a moblile dialup connection, that means i'm connecting my cellphone to the computer. my windows firewall is disabled, i dont have a router. I really need some help, specially because downloading music trough google is completely hideous. If you can help me find a solution, please do. I am anxiously waiting for a reply. Have a nice day. :icon_prof :icon_prof :icon_prof

[DigitalJunkie]

Did you use mobile dialup connection before the problems started? You're not the first that are having problems. Maybe the providers have built-in firewall protection on their networks?