Ok, so I was just refreshing my private messages screen and suddenly at the top of the page this huge line of UUUUUUU's just appeared. I checked the page source and found that the U's were before the Doctype of the webpage so it couldn't have been a DB glitch. Oh, and I refreshed the page again and it disappeared... Any thoughts? EDIT**Ok they just appeared again right after I published this post.
Sorry, was me... was inserting a bunch of trace markers when I was debugging some stuff and somehow you guys were getting a U for every trace I inserted. Weird. All the trace code is removed now anyway (I finally found and fixed something that has been bugging me for literally years).