I have a very weird issue.
OES2sp2 64bit running a NSS volume where migrate is disabled.
All of a sudden a large number of files have the mg attribute set and the file cannot be opened by either the Windows client nor from Linux.
Once you clear the migrate attribute (attrib <file> -c=mg) the file is accessible again.

Does anybody know what might be causing this? The server is running Sophos antivirus and Netbackup