Hi, Can I turn off threaded computing in itkWatershed filters if I set CMAKE_USE_PTHREADS to be "OFF" in cmake? Thanks. -Feng _________________________________________________________________ Fast. Reliable. Get MSN 9 Dial-up - 1 month FREE! (Limited-time Offer) http://click.atdmt.com/AVE/go/onm00200361ave/direct/01/