I get the same thing from time to time, on Chrome.
Regarding a lot of these issues lately: Please do keep in mind that I am not at all in the habit of messing with the software aside from keeping it updated, so any sudden weird issues are probably your browser. I think if you look back through this thread you'll find that a lot of the problems people experience are Chrome's fault.
I am more than happy to help when I can, and this forum is far from perfect, but it is at least pretty constant in being what it is. If you are suddenly having an issue that you were not having yesterday or last week, please do not immediately assume it's the site. Chrome gets updated and changed conatantly, whereas Rockmelon sees little more than the occasional security patch, and is largely exactly the same tech-wise as it was 2 years ago.
I'm not saying don't let me know when there's a problem, I'm just saying that in most of these cases, it's probably browser-related.