I can not upload to any site or ftp or ssh or http
A couple of days to change Turbonett Claro and my ubuntu and will not let me upload files.

I'm browsing through a proxy, nor is there a firewall. For example, when I upload a file via SSH, the progress bar starts and then remains in state "stalled". Also when I upload a file through Flash throws me a Error # 2038.

I can not upload files by FTP. Someone has gone something like this? Can you help?.

Note. I can usually download files and surf the web without problems.

Thanks for help!