never used Home Server myself, I value my data
Networking for Pros: Microsoft Home Server Bug Could Corrupt Files
Users of Vista Photo Gallery, Live Photo Gallery, Office OneNote 2007, Office OneNote 2003, Office Outlook 2007, Microsoft Money 2007 and SyncToy 2.0 beta, may find their files corrupted after saving them to Home Server.
MK Knowlege base article
love the work around, real user friendly: "use Windows Explorer or a command-line tool to copy files to and from the Windows Home Server-based computer"
But don't worry, they are working on a fix, it'll be ready in....
June! 