Aura H2O Is this normal?

I have had my H20 for about a week now and so far its great. The only thing that bugs me is that after using calibre to load on books it takes forever to finish "PROCESSING CONTENT" I added about 150 books the other day and it took almost an hour for it to finish processing. On my Sony as soon as I un-pluged it from my pc it was good to go.

Is this a normal thing for the kobo's or have I somehow gotten a faulty reader?

Thanks In Advance
Dill