Hello,
You don't mention anything about the particular hardware platform nor what driver version you are using. To get any sort of meaningful feedback, please run the debug tools for the devs to get an idea of what device(s)/configuration(s) this issue is occurring on. Collect the information and attach it to the post.
Here is a link that mentions how to do that:
http://www.displaylink.com/support/ticket.php?id=269