Working for me today too, yesterday not so much. I did find that I could navigate the site as along as I didn't go to the home page where there were issues.
Here's what Sean posted on Facebook last night...
hostmonster cleared their server cache and the www.xlights.org web site should be up for all. if you do have an issue try clearing your cache in the broser. please post if you still cant access xlights.org after clearing your cache.