I\'ve been up for hours now, searching online for a solution. I can happily say, this has really pissed me off.
Upon opening \'Install New Software\' I get \"\'Contactin
I have had the same problem in the past when installing new software in Eclipse.
In my case it has always been a problem with my Eclipse Proxy settings.
Eclipse > Preferences > General > Network Connections
Make sure you have your proxy settings configured correctly. If you are on a college or office network you can get the Proxy details of the administrator. In my case I had to configure the HTTP, HTTPS and the SOCKS.
The SOCKS requires that you input your username and password.
NOTE: If your network username or password changes you will have to update this.
In my case I had to change the "Active Provider" drop down from 'Direct' to 'Manual'
This solved all my problems
More info at http://help.eclipse.org/helios/index.jsp?topic=%2Forg.eclipse.platform.doc.user%2Freference%2Fref-net-preferences.htm