[news.eclipse.platform.rcp] [Error] org.eclipse.swt.SWTError: No more ha

[m-heiss@xxxxxx (Michael Heiß)]

Hello,

I am getting more and more of the follwing error 
(org.eclipse.swt.SWTError: No more handles) in my RCP application and i 
simply dont't know why.

I am using the following piece of code quite often im my application:

Display.getDefault().syncExec(new Runnable ()    
{
 public void run ()    
 {
  ... Do something with the ui
 }
});

How can i avoid this error? 

BestRegards 
Michael