Hi Michel,
First of all, the forum is quite slow again.
Secondly, did you apply filtering to the Calendar section? I have most of the categories filtered in the Chatter's forum.
So, when I have a free minute I check that forum using the Calendar button. Right now I only see few messages in the Chatter instead of the whole lot...
I would prefer to let Calendar allow not filtered view.
If it's not broken, fix it until it is.
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