It seems to me that Apache running modperl under NT can only process one request at a time. Is this true? I am running modperl 1.24 using apache 1.12 and perl 5.6. Perl was built with neither multiplicity nor multithread. Is there any configuration of apache, perl, modperl that would process multiple perl pages at the same time under WinNT? To prove that modperl is single-threaded, I have a perl script that prints the time, sleeps 5 seconds and prints the time again. use strict; print "Content-Type: text/html\n"; print "\n"; my $tim = time(); print "started: $tim<br>\n"; sleep(5); $tim = time(); print "finished: $tim<br>\n"; And I have a frameset that includes the above script twice and an image for good measure. <html> <frameset cols="*,*,*"> <frame src="cgi-bin/tim.pl?1"> <frame src="cgi-bin/tim.pl?2"> <frame src="test.jpg"> </frameset> </html> The result is that each frame waits for the previous frame to complete. Frame 1 read: started: 979311882 finished: 979311887 Frame 2 read: started: 979311889 finished: 979311894 Frame 3 didn't load until Frame 2 was complete.