Files are scrutinized for viruses, and if they're executables they're run
in order to see if they work. Animations get played, etc. I think 3 days
is an average turnaround for all this.
I have been disappointed by the lack of immediacy from this procedure, but
I'm pleased to know that it keeps the quality of the files high. If this
forum had less traffic, perhaps the turnaround would be quicker!
Nik