[Twistedlordi]

Hey guys, i've recently got a new pc and re-installed samp, i went on my friends Hamachi based server no problem and played successfully for many hours, however, when i try to join a public hosted or internet server, the game says "The server did not respond... retrying". I have given both samp and normal gta sa full acess past my firewall and re-installed both samp and the game several times, any thoughts?

My pc specs

AMD 6 core processor 3.2GHz
8gb DDR3 RAM
Nvidia Geforce 450 GTS
500gb hard-drive

Any help would be great, thankyou.