I really really really don't want make one of those "You all would be mad if this was a Republican" posts, but seriously, if this was in the Bush Administration, Dems would (rightfully) be calling for heads to roll.
Perhaps a hard drive incident itself would, but some kind of mirror image of the IRS "Scandal" would never have fired up Democrats like this. Once it was debunked, only a small fringe of Democrats would care and Democrats in Congress (other than McKinney-types) wouldn't be calling for more and more hearings about it.