Defrag hard disk

Patrick, Have a look @ this article (http://avgclick.me/AVGtechnical).
AVG Guru

Running maintenance and all goes well but process gets stuck on defrag hard disk.  Process has been stuck on this operation for more than 2 hours; the bar has not moved for more than 2hrs.  Please advise

Patrick, Have a look @ this article (http://avgclick.me/AVGtechnical).
AVG Guru