I checked this site about an hour ago and got the error message, no input file specified, with a blank page. I was trouble-shooting the problem, and found that disabling the Netfirms Pretty Permalinks plugin fixed it. I blogged about this in January, as Netfirms wouldn’t support URIs without “/index.php,” without the work-around. Apparently Netfirms fixed this one month ago, but I didn’t have any clashes till now.
Now everything’s fine (it was about twelve hours that pages except the home page were broken). Also, Canonical URIs work now, so one like richardxthripp.thripp.com/index.php?p=139 (generated by yak, my shopping cart plugin) will redirect to richardxthripp.thripp.com/photo-spores-of-the-sun-139, like it should. I complained about this in my bugs list; still, www.richardxthripp.thripp.com won’t go to richardxthripp.thripp.com, and changing the title of a post in the URI will work without redirecting as long as the post ID is correct, but it’s a step.