accounts disabled after sign up

Hi is possible that facebook identify your pc/mac ? I m creating new accounts but after some new accounts fb block me and say need to confirm your identity and logout button. .but is a block different from the usual identity block I have many proxies and ip dynamic.. clear always cache and...

Hi guys, I created too many Facebook accounts on a single IP and now everytime I try to create a new one, right after I press Sign Up it gives me this: I cleared everything up with CCleaner and also I tried with a US proxy and it still gives me this error. How?! Also, my existing accounts...