Yes, I can.

When some members writing me a commentary in my gallery, sometime I receive this ebot only one day after. 
Or, when a member post 3 pictures in the same time, I receive the first and second ebots about them and the 3th only in the end of afternoon... 
Or, Imagine the member A, B and C post a picture, sometime I receive the ebots in my email for the member A and C y for the member B i can receive it only few hours after.

It's not very important but it's just for say you something don't work good..