Help with "Post REPLY"

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[wireless]

Is there a time window when posts get locked for further replies?
I get this message

on what seem to be older forum threads. Oddly though I can give KUDOS on those threads.
i do not get this message in any of the "Latest topics in Forums" and of course I can reply in this thread. ?

Is there something else I need to turn on so I can reply or any idea why I get this message?


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