title: lagging display in SWT
body: <p>I'm creating a java GUI using SWT. I'm currently running it on a Mac. The process that the GUI is a front for takes some time to run (approx. 70 minutes). Once I start this long process through the GUI, I get the rainbow spinning wheel and the GUI hangs until the process is complete. Is there any way I can solve this? Would it involve starting the process on a different thread?</p>
  
  <p>Thanks! </p>