I keep seeing that someone made a new response to my discussions but can't ...

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... see them. When I go to "Discussions I have made" I keep seeing new names for latest response and how many minutes ago. When I go to the discussion, there is nothing new there. I tried to add a comment to one old response but kept getting the red message "unable to post content, please try again". Is anyone else having this problem? I have not been able to use the search tool either, I get server error message every time.