It segfaults on a linux on an athlon with both the latest CVS and perl 5.8. The compiler is gcc 3.2.1. I don't have acess to other hardware. One needs PerlQt 3.006 installed to run pqtapi which generates 13K lines. I have been able to recuce the program quite a lot but have not been yet successful to find a small string to match that causes the segfault. open I, "pqtapi|" or die $!; undef $/; $_ = <I>; m/(?:.*\n)*?.*Q\(.*/; -- stefThread Next