Microsoft revealed last week that Windows Home Server is corrupting shared files when accessed by a variety of Microsoft and third party programs:
We just published a Knowledge Base (KB) article on Microsoft Help and Support: “Editing files using certain applications may cause file corruption on a system running Windows Home Server (946676)”. A few people in the Community Forums have reported data corruption when saving files from applications including Windows Vista Photo Gallery, Windows Live Photo Gallery, Microsoft Office OneNote 2007, Microsoft Office OneNote 2003 and SyncToy 2.0 Beta.
…our development team is working full time through the holidays to diagnose and address this issue. We will keep you posted on our progress on this issue as soon as we have more to share.
According to the KB article users have also reported problems with Intuit Quicken and QuickBooks, but Microsoft has not reproduced those yet. The advice for users is, “Make sure that you have a backup copy of any important program files before you store these files on a system that is running Windows Home Server.” Translated that means you shouldn’t do it at all which is disconcerting news for a product that is intended to help you share and protect your data.