White House is Missing 5 million emails

Can any conservative explain this one? How can the federal gov't specifically the executive office, lose five million emails? I have worked for state and federal government and everything is backed up. Hell the back up tapes are even taped. To say five million emails are missing indicates that the Bush administration is yet again hiding information, doing something sneaky, and probably illegal. Some emails requested during the Scooter Libby trial are amongst the missing messages. I wonder how much corruption is allowed in our government at this point. If Clinton can get impeached from screwing a blimp (sorry conservatives, I mean lying while under oath)why can't Bush get slapped on the wrist?