Check this out guys, these are the IP addresses that i'm using right now for firefox. You can use this proxies if you have any problen for DNS Blocking Software. Just install a new browser and click ME so that you'll have an idea how to put this proxy on the bowser.
222.251.133.59 port 8080
121.150.249.26 port 8080
203.162.183.222 port 8080
121.12.249.207 port 3128
66.198.41.11 port 3128