Walter, this seems to be a general problem with Google product forums, not just us.  It's been reported.

On Monday, 19 March 2012 10:10:02 UTC+1, Walter_V_R wrote:

At this moment, the new GEC is frozen here ...

I can post (apparently) but all the recent replies are marked "loading" even after refresh or reload of the page.

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Eclipse chasers Belgium - Urania Public Observatory