Happened twice now, ive posted, its gone back to the actual post and my reply not there, but in checking a few hours later its there.

i replied to one of detectors threads, and about 3 people posted after i had replied but mine was delayed in posting?

just replied to an irish photo in the pictures and its done the same, if i check in a few hours my post will be there?

happened yesterday and today.
anyone else having this problem?