we have just brought a new server online running windows 2003 server standard r2. our workstations are a mix of windows 2000 and windows xp pro. the new server immediately began to crash several times a day. the crashes were in the form of the system freezing or blue screen requiring a manual forced power down by pressing the power switch. after some investigation we discovered that if any employee viewed a directory on the server containing .jpg files using Thumbnail view the server froze instantly and this problem only happened by employees using windows 2000 workstations. we are able to replicate a server crash from any windows 2000 workstation in the company. employees running windows xp do not cause this problem.