Installation fail on ubuntu 10.04

[vamba]

hi to everybody

I have ubuntu 10.04 behind a proxy.
I set http_proxy and https_proxy correctly, because I can use wget with no problem but when I:

sudo python -c "import sys; py3 = sys.version_info[0] > 2; u = __import__('urllib.request' if py3 else 'urllib', fromlist=1); exec(u.urlopen('http://status.calibre-ebook.com/linux_installer').read()); main()"

I receive:

Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/usr/lib/python2.6/urllib.py", line 86, in urlopen
return opener.open(url)
File "/usr/lib/python2.6/urllib.py", line 205, in open
return getattr(self, name)(url)
File "/usr/lib/python2.6/urllib.py", line 344, in open_http
h.endheaders()
File "/usr/lib/python2.6/httplib.py", line 904, in endheaders
self._send_output()
File "/usr/lib/python2.6/httplib.py", line 776, in _send_output
self.send(msg)
File "/usr/lib/python2.6/httplib.py", line 735, in send
self.connect()
File "/usr/lib/python2.6/httplib.py", line 716, in connect
self.timeout)
File "/usr/lib/python2.6/socket.py", line 514, in create_connection
raise error, msg
IOError: [Errno socket error] [Errno 110] Connection timed out

Any help?

thank you