Can't open MS Powerpoint or MS Excel Files

[GoogleCodeExporter]

What steps will reproduce the problem?
1. open Excel *.xlsx or Powerpoint *.ppt Files with Office 2003/2007/2010
2.
3.

What is the expected output? What do you see instead?
Returns a message, that the file is read-only

What version of the product are you using?

win-sshfs: 0.0.1.5
Client OS: Win7 Prof. 64bit
Server OS: Debian Wheezy
Ssh server: OpenSSH_6.0p1





Please provide any additional information below.
In Samba they had a similar problem (at the bottom there is also a possible 
solution)
http://www.techsupportforum.com/forums/f57/powerpoint-2007-file-access-from-samb
a-253853.html

ExpanDrive a commercial product for sshfs don't have that problem, maybe the 
have found a solution, sftp-net-drive http://www.eldos.com/sftp-net-drive/ have 
the same problem as win-sshfs

Original issue reported on code.google.com by sasch...@gmail.com on 24 Aug 2012 at 9:32