My company uses NTLM proxy, I have configured the proxy in eclipse preferences(I am using eclipse indigo JEE bundle) and have installed STS 2.7.1 release from update site,
In Dashboard, the dashboard and knowledgebase tabs seems to work(though inconsistent,i need to click on refresh buttons sometimes to get the udpate and RSS feed to download, but still can say it works).
The real issue though is in Extensions tab, It always fails with the following error,
Failed to discover all connectors.
RemoteBundleDiscoveryStrategy failed with an error
IO failure: cannot load discovery directory
Cannot download http://dist.springsource.com/release/STS/discovery/directory-2.8.xml: HTTP response 407