When I try to create an OpenShift Application from the JBoss Central page in Eclipse the wizard displays the following message after I enter username and password:
Could not check user credentials: Could not request /api: java.net.UnknownHostException: openshift.redhat.com

Verified that manual proxy setting are configured correctly in Eclipse under Window > Preferences> General -> Network Connections (proxy settings work with other plugins).
When I'm not behind a proxy OpenShift login works as expected.
I don't see the OpenShift UI or JBoss tools version listed in the Affects Version list, I have 2.3.1 for OpenShift tools.