Your recent upload did not conform to Image Policy. Duplicates and low quality images are not allowed to be uploaded or they'll be deleted. Also properly name you images so that is not something like "28829120 871773026316550 1332789346 n.jpg".
Hmm the article isn't locked and you're not banned so it may just be a wiki issue. Try it again later.
Also, I saw the image you were trying to add to the Arclight page. That image is very poor in quality and not to mention the black bars on the top and bottom. I recommend using another image or editing it beforehand.