Since the gallery finally works, I can give you a few tips on uploading:
1. Your image shouldn't be wider than 1024 pixels
2. Your image should be smaller than 1 Mb (So remember to resize the pic in Photoshop, etc.)
3. Only upload .jpg files
4. Remember to fill out all of the fields (title, description, country, lens, camera)
I hope this helps
The gallery is at
http://www.pentaxforums.com/gallery/