jpeg/gif attachments in GW2012 client on Windows7 slideshow

Hi,

We have noticed this on a few PCs so far.

Gw2012 client on Windows 7 64-bit.

Problem only noticed in jpeg/gif attachments.

When the user right-clicks and OPENs a jpeg/gif attachment, the file opens in the Windows Photo Viewer. However, it defaults to a slide show and starts showing other jpeg/gifs which were opened in the previous emails. How can we stop the slideshow and have only the opened file displayed?

Anyone has experienced this problem?

Any help in this regard would be greatly appreciated.

Regards,
Yaser