For some time, I have been unable to connect to any server. But recently, I went to a friends house and connected to his wireless connection, and SMP worked fine. But as soon as I got home and connected to my wireless again, it stopped working. This happens with every server. Ive gotten about a dozen new bins and half a dozen new .minecraft folders. Im seriously desperate here, the only reason I bought Minecraft was for the multiplayer aspect. Does anyone know what my problem is or how it can be fixed? Any help would be greatly appreciated. Thank you.