it sounds to me like for some reason Gimp is the default app for opening media files rather than eog (eye of gnome)...
right click on the files and select properties> open with and see what's listed
if the gimp is selected change it to Image Viewer (if it's on the list) or click add to add it to the list.
The above assumes you are using Gnome, if you are using KDE the steps are very similar.
Can a KDE user confirm or deny that last statement? kthx!
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ArchLinux x86_64 - Custom Built Desktop
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