NTFS Compression
The Windows Home Server team has solved a software bug that may affect files that are compressed using Advanced Attributes (NTFS compression). NTFS compression can be enabled on an individual file, folder or at the hard drive level and is sometimes enabled by users to save disk space on a home computer. More information on the bug and a link to download the fix at KB950190.
You can visit the Windows Home Server Community Forums if you want to ask questions or discuss this issue, by accessing this thread.