Event Receivers not Firing when Uploading Files using the Upload Multiple Documents Window

Hi there,

I am trying to set some metadata on documents when they are added to a document library.  My current code works perfectly when I add a single document.  However, when I upload multiple documents using the Upload Multiple Documents window, no event receivers seem to be fired...  I've tried ItemAdding, ItemAdded, ItemUpdating, and ItemUpdated.

Is this expected behaviour?

Thanks for your help.

Amy