This happened to one of the threads in my forum. Xenforo 1.0.4. No add on. The post looks like this Code: [media=youtube]YbSrw5zHBKE[/media] [media=youtube]H0cpai31_6s[/media [media=youtube]juw8hWiBrts[/media] (some thai texts) ลองเข้าไปอ่านในนี้ดูค่ะ http://ononeanimation.com/board/threads/50/ [/media] On the second line, there's 1 missing square brackets. On the last line, there's extra [/media ] All machines at my office has NOD 32 installed, and they all reported some trojan while this page is loading, before it timed out. Removing the extra [/media ] doesn't do anything. But adding the missing ], and all the errors go away.