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If a file in a shared folder (under Windows 7) is opened by gedit, a temporal file is created with a name like '.goutputstream-xyz' in the shared folder.

After editing the file saving is not possible because gedit cannot rename the temporal file. In German the error is "Unerwarteter Fehler: Fehler beim Umbenennen der temporären Datei: Das Programm kann nicht ausgeführt oder verändert werden (busy)"

Which Windows folder are you sharing? Is it located in your name space?
What is the mount statement you are using on the guest?

My mount-statement is

WinDok /home/WinDok vboxsf defaults 0 0

WinDok is a folder in C:

WinDok /home/WinDok vboxsf defaults 0 0
Are you putting this in the fstab or rc.local

Try using the the mount below in your rc.local (comment out the other command you are using)
mount -t vboxsf -o rw,uid=1000,gid=1000 WinDok /home/WinDok
(replace the uid and gid with your user id)

The problem is Gedit, nothing more. This isn't much that the VB team can solve, as gedit is the only program that has problems with this. It's proof that gedit is written very poorly and has some major bugs in it that the devs don't care about. You're better off using a different editor, like Mousepad or Leafpad. If you really want to use gedit, then copy the file to the local file system, edit it and then copy it back.

Sasquatch wrote:The problem is Gedit, nothing more. This isn't much that the VB team can solve, as gedit is the only program that has problems with this.

I have experienced this many times when installing programs from a VB shared folder where the program sometimes indicate it has to do with a temp folder. There is no problem using Windows own fileshare.

The same problem with Shotwell.