[1.4-rc-1] gradle dependencies results in endless loop stating authentication error

I’m having the same problem (NEGOTIATE authentication error: No valid credentials provided (Mechanism level: No valid credentials provided)) with Gradle 1.4 and 1.5.

I’m behind a proxy and using these settings:

systemProp.http.proxyHost=proxy.company.com
systemProp.http.proxyPort=8080
systemProp.http.proxyUser=user
systemProp.http.proxyPassword=password
systemProp.http.nonProxyHosts=localhost
http.auth.ntlm.domain=DOMAIN
systemProp.http.keepAlive=true

The same exact configuration works with Gradle 1.3.

With 1.3 I also get the error message, but only once!

When I switch to 1.4 or 1.5 it gets stuck repeating the authentication error again and again.

Output: Gist