Ossama, Does anybody have any experience with ACE 5.1 on NetBSD 1.4.2 (i386) with pthread support? I have tried to date with GNU portable threads (pth 1.3.7 and ptl 2.1.3) and with FSU-pthreads. The first, even though installed is ignored by ACE configure script, the second cannot be compiled on NetBSD i386 because it is for FreeBSD on SPARC. What POSIX threads library has been tested with ACE on NetBSD? Thanks Marian Romascanu