I have a brand new laptop and you can imagine my distress when I started seeing a number of error reports (including log events) indicating that CHKDSK needed to confirm the health of my disk (not nice to see on new hardware). Turns out this is due to a known issue with revisions to the NTFS file system that ships with Windows 7. Whilst a fix is slated for SP1 this is annoying. By the way, its not just subversion that is potentially affected by this change to NTFS but that’ how its manifesting for me. See http://subversion.wandisco.com/blogs/windows-7-bogus-errorfilecorrupt-error-.html for further details.