Try to connect with Ufasoft CPU miner:
bitcoin-miner.exe -a 5 -o http://youraddress.freeiz.com:80 -u worker -p x
But the miner don't connect to proxy, it remains with:
0 Mhash/s Error 80072EE2: The operation timed out.
What's wrong?
Can you use a packet sniffer (like Wireshark) to see what's going on when your miner tries to contact the pool?