Hi, I used ZenPhoto as a wallpaper website, I don't know if it supports that many images. At the moment I have around 200 images, and user complain that website is slow. How can I improve that?
website: www.xda-wallpapers.com

Your site is not accessible beacuse of an error. You surely have some big images for a wallpaper site. Zenphoto first needs to create the thumbs and sized images for display. These are created once on demand with the first visitor and then cached from then on. If you have big images your server has more work to do and maybe is not powerful enough to do this with lots of images it will be appear slow for the first user who visits the site. This is not a limitation of Zenphoto but of your server. Please read on the troubleshooting especially this:
http://www.zenphoto.org/2009/03/troubleshooting-zenphoto/#11
http://www.zenphoto.org/2009/03/troubleshooting-zenphoto/#22