@EL_EASY, Pidgin was working with Yahoo! for me earlier today and still is. So far, the IP I found and the Pager Server munkey216 found have been working nicely for a few days.

Remember, make sure it's cn.scs.msg.yahoo.com. If that fails completely, go ahead and add the IP address from the other thread to your hosts file to be 100% sure you've ruled out the possibility of it not working. Also, make sure your machine can connect to the Pacific Asian Yahoo! Pager Server. Ping the site from your device (make sure you have root privileges):

My tablet can see it. If you get an error, then your tablet can't connect. If you get an error for using it and asks if you are root, then you have not enabled root on your tablet. Go here (best option is rootsh).

To stop the pinging of the site, press Ctrl+C on your tablet if it's reading it. If you can ping the site from your tablet without a problem, then there's something else wrong. Perhaps with your router. Post here when you have results.