Trash taking longer to empty?

I have noticed recently that the Trash seems to take longer to empty than it usually does. It's mainly with larger files such as video files or quite a few .rar files in one folder. Where as not long ago files of the same size/format used to empty quicker than they do now.

Anyone know what could cause this?

I am not secure emptying the trash and I also don't have the Empty trash securely option checked in the finder preferences.

 

I haven't got Mackeeper, I'll give Trash-it a try, Thanks.