Lost files + indentical Foldernames on XFS Partition

[Steffen Knauf <Steffen.Knauf@xxxxxxxxxxxxxx>]

Hello,

today i have a strange behavior. I have a a directory which contains 
lots of indentical Folders with the same Name and Inode.
I don't create Hardlinks or something else. On the other side some files 
are suddenly vanished. A "ls -al" result in the following error: 
"Access  to bla not possible: File or Directory not found."
I don't find some Errormessages in the logfile. I don't know whether a 
xfs_check make sense.
greets

Steffen