It has come to our attention that there is a bug in 4.0.4 that allows guests to see threads posted in private forums when using the Recent Threads Widget. Please see this bug report for the fix:
If you do not have time to patch that file, then we suggest that you disable the Recent Threads widget until a patch is available. We apologize for the inconvenience but we wanted to let you know about this as soon as possible.
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