Received orphan block

check the log of full now i got a lot below msg
Received orphan block of height 2307726 rh 53a8bd803549dab6ea0d144695dce69577a72a97c2bc31b54c69c2f107f0de73

is it normal ?

Someone didnt update their client?

based on dashboard still got a few thousand node is still running old version

just wonder its will impacting the network ?