I get that too, it may possibly be a bug.
Actually, ignore that, didn't realize how old this post is.
And ignore the double post, too - I can't see an edit button (unless I'm just being stupid)
You can't edit 'til you get 10 posts. For the topic what is exactly the issue? Few details have been given...
It seems to be that most Japanese characters appear as question marks, observed by me too.