Hi all...
It seems the current YaBB installation has or had a nasty bug that will prevent new PMs from being displayed correctly.
I apparently already missed a few due to that bug (sorry folks), so at this time I can only advise to regularly clean your PM folders and manually check on them.
If you ever see something like "Good evening, [your Username], you have xx Messages,
-1 are new
" - it means you got the bug.
Workaround :
If no new message is visible in your PM folder, delete an older one. That apparently temporarily fixes the PM count and the new PM becomes visible.
-- edit --
I've given the Board the full internal maintenance workover, hopefully that helps.
-- edit 2 --
If you ever see that again, please post here into the Thread, so I can rerun maintenance functions when needed.