Gary,
In each of the new galleries when you go to the galleries home page, it is all text, there is a huge gap between the main paragraph and the last two lines, with the >> there to show the way. The link back to the Home page and the Galleries, is too low in the page, had to hunt for it. I would keep all links regarding navigation to top as you have in the Index page of your site or maybe the left hand side to make it easier to navigate.
You need to make it more obvious about the fact your images are copywrighted and not to be used without permission and include as Steve said that all images found used commercially that are yours will be dealt with by Legal Action or words to that effect.
Faster loading of images is good, having problems with captions having to be redone each time you make a change is a hassle. How does one leave a comment on your or about your images. This is always one of the inherent problems of website design and one of the reasons I have gone with coppermine as my gallery software. People can join if they want, they can leave comments on the images, uploading of images isn't a hassle at all, it is much like in the galleries here. Photos can be rated as well.
On the Admin side of things I can even see what IP's people come from etc as well and I like that idea too.
Web Design is always a very personal thing and getting a site to look the way you want is always the best. What functions easiest for people browsing your site is always the most important thing as people will always leave if things take too long and aren't easy to navigate through and is uninsteresting as well.