Gutsy cannot connect via a proxy

[Lionel Dricot]

At work, behind a corporate proxy (that I can't control at all), Ubuntu cannot connect to the Internet. In fact, it can connect but never receive data back. (see the wget log below)

This bug is completely Ubuntu specific : Windows, other Unixes, QNX and even other Linux distribution can connect without problems.

Access to the intraweb is working flawlessly and some data from the internet are even received :

In the following example, the proxy is 192.168.1.1:80. DNS requests are working, we get the IP of any domain without problems. Then, our Ubuntu wait for 2-3 minutes before displaying a timeout error.

$ wget --proxy-user=USER --proxy-password=123456 http://google.com
--15:37:17-- http://google.com/
           => `index.html'
Connexion vers 192.168.1.1:80... connecté.
requête Proxy transmise, en attente de la réponse... 301 Moved Permanently
Emplacement: http://www.google.com/ [suivant]
--15:37:18-- http://www.google.com/
           => `index.html'
Connexion vers 192.168.1.1:80... connecté.
requête Proxy transmise, en attente de la réponse... 302 Found
Emplacement: http://www.google.be/ [suivant]
--15:37:18-- http://www.google.be/
           => `index.html'
Connexion vers 192.168.1.1:80... connecté.
requête Proxy transmise, en attente de la réponse... 200 OK
Longueur: non spécifié [text/html]

This bug might be Gutsy specific and might be related to bug :
#109635 ( https://bugs.edge.launchpad.net/ubuntu/+bug/109635 )