Hi,
1. I didn't mean where in Eclipse you've installed it from. I meant where did you get the plug-in from?
This is how I would know the version you're using.
2. in Eclipse, go to Window -> Preferences -> type "proxy" -> Network Connections.
What is configured there? Also, does your environment requires a proxy in order to make a connection to the "outside world"?
Regards,
Michal.