Something I noticed while reveiwing galleries, that sometimes if the server is bogged down on some hosts the page will load fine but when trying to access a pic, a 404 page will pop up. Not a redirect but the server may not have found the image since it was so bogged down. So this could also be the problem. I would check the hosts gallery links constantly for awhile and when you feel sure it doesn't happen again then it should be a pretty stable host.
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http://www.lostbush.com