I found the error in my apache logs. Does this help at all?
[Thu May 17 10:51:33 2012] [error] [client 127.0.0.1] , referer: http://glauchan.org/meta/
[Thu May 17 10:51:33 2012] [error] [client 127.0.0.1] libgomp: , referer: http://glauchan.org/meta/
[Thu May 17 10:51:33 2012] [error] [client 127.0.0.1] Thread creation failed: Resource temporarily unavailable, referer: http://glauchan.org/meta/
[Thu May 17 10:51:33 2012] [error] [client 127.0.0.1] , referer: http://glauchan.org/meta/
[Thu May 17 10:51:33 2012] [error] [client 127.0.0.1] sh: djpeg: command not found, referer: http://glauchan.org/meta/
[Thu May 17 10:51:33 2012] [error] [client 127.0.0.1] sh: cjpeg: command not found, referer: http://glauchan.org/meta/
[Thu May 17 10:51:33 2012] [error] [client 127.0.0.1] pnmscale: , referer: http://glauchan.org/meta/
[Thu May 17 10:51:33 2012] [error] [client 127.0.0.1] EOF / read error reading magic number, referer: http://glauchan.org/meta/
[Thu May 17 10:51:33 2012] [error] [client 127.0.0.1] , referer: http://glauchan.org/meta/
[Thu May 17 10:51:33 2012] [error] [client 127.0.0.1] sh: sips: command not found, referer: http://glauchan.org/meta/