[Samba] cp using mount cifs gives corrupt files

[Thomas Winter]

Hi,

I do mount an samba share with cifs.
I copy an large tar.gz file (892 Mbyte) from local to the mounted dir.

result:
the copied file is corrupt
gzip: stdin: invalid compressed data--format violated
tar: Unexpected EOF in archive
tar: Error is not recoverable: exiting now

If I make an diff between local and mounted share it tells me binary is 
different.

I tried again cp the file and same result.

Iam using debian etch on both machines (one is i386, the other arm)
libsmbclient 3.0.24-6etch10


How can this happened and how I can prevent this?

best regards
Thomas