You don't see any differance in the layouts of the gallery page at these screen widths?
800 -
http://www.link-o-rama.com/plateman800wide.jpg
1024 -
http://www.link-o-rama.com/plateman1024wide.jpg
1152 -
http://www.link-o-rama.com/plateman1152wide.jpg
That top left cell of 6 pics goes from 2 across & 3 down at 800 to 3 across & 2 down at 1024 to 4 on top & 2 on the bottom at 1152.
IMHO that's bad. You should be designing your sites so that no matter what screen size the surfer has, they all see the same layout.
As far as the pics, web pages are meant to be read/viewed left to right & top to bottom - you have them starting on the top right, going to the bottom right & then back over to the left.