us.wemineltc.com:80 doesn't work for me either. there isn't any error it just never connects. the eu server works fine but i'm in the US.
Works fine for me with cpuminer.
My stratum proxy batch file = stratum_proxy.exe -o us.wemineltc.com -p 80
My cpuminer batch file = minerd.exe -o
http://127.0.0.1:8332 -u [my worker id] -p [my worker pass]
I start stratum proxy first, then the miner -- usually link up and begin mining within 30 seconds.