Along those lines, a webserver yesturday had a very bad hard drive crash and The Company has been having some difficulty in doing a proper restore (having to rebuild an entire server, and primarily doing a network based recover when a (poorly announced, but announced nonetheless) router reboot caused it to fail part way through (or so I'm lead to believe), so it's taking some time to get everything back.
But clients are complaining about The Company loosing some, but not all, the files. And complainint bitterly. Okay, fine. We had a hardware failure. Whole server blown out of the water. Recovery taking some time, and yes, there was a window where files may have been lost between the last good backup and the failure, if any files were updated during that window.
But come on—you have a hosted website and you (or the company that did your website) don't have a current backup yourself? What's this you say? The hosting company is responsible for backups? They say they backup? Here, let me fill you in on something: THWACK! Don't ever count on the hosting company to keep current backups. It would be better (and probably faster recovery) for you to keep a backup of your site and restore it yourself. Even if the hosting company keeps good backups, they're usually so large it takes several hours to recover the data to begin with.