Hi all, We're compiling ITK under Solaris 2.6 using gcc 2.95. pthread_setconcurrency() is not defined at line #93 of itkMultiThreader.cxx despite the compile guards for __SVR4 and sun. i.e. #if defined(__SVR4) && defined(sun). Do we need an additional check for Solaris 2.6? Any ideas, Bob Kaucic