Extra files found after a copy from Windows

[bill at horne.net (Bill Horne)]

TWIMC,

Below is the partial output from an "ls -lh" command run on a
directory in my server. It shows a number of files, named
Scan<nn>.jpg. This is expected and welcome: they're there because I
did a copy and paste from my son's Windows machine into the server
directory they're in now.

However, each of the .jpg files has either brought with it, or Samba 
has created, two other files: one is apparently a thumbnail image, and 
the other a zero-length file, both starting with the same name as the 
associated .jpg image.

Please tell me why/how these files have appeared, and if they indicate a 
fault condition. TIA.

Bill Horne



total 61M
-rwxrw-r--    1 henry    users        168k Dec 28 04:44 Scan1.jpg
-rwxrw-r--    1 henry    users        6.3k Dec 28 04:44 Scan1.jpg:Q30lsldxJoudresxAaaqpcawXc:$DATA
-rwxrw-r--    1 henry    users           0 Dec 28 04:44 Scan1.jpg:{4c8cc155-6c1e-11d1-8e41-00c04fb9386d}:$DATA
-rwxrw-r--    1 henry    users        615k Dec 28 05:05 Scan10.jpg
-rwxrw-r--    1 henry    users        6.0k Dec 28 05:05 Scan10.jpg:Q30lsldxJoudresxAaaqpcawXc:$DATA
-rwxrw-r--    1 henry    users           0 Dec 28 05:05 Scan10.jpg:{4c8cc155-6c1e-11d1-8e41-00c04fb9386d}:$DATA