FYI $ uname -a CYGWIN_NT-5.1 PC1163-8460-XP 1.7.0(0.166/4/2) 2007-02-26 09:41 i686 unknown unknown Cygwin
$ perl --version This is perl, v5.8.7 built for cygwin-thread-multi-64int (with 1 registered patch, see perl -V for more detail) [snip] $ perl -e 'open(x, "ls|")' panic: MUTEX_UNLOCK (1) [util.c:2279] at -e line 1. -- Brian Ford Lead Realtime Software Engineer VITAL - Visual Simulation Systems FlightSafety International the best safety device in any aircraft is a well-trained crew... -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/