Yes and no. I found a sort of workaround -- for my specific problem, perhaps not for yours. Open an Explorer window on the directory where new files are being written and sit there and watch the icons pop up one by one as the files are being created.
Workaround two is, use Linux instead. I put RedHat 9 on my home desktop box. It comes with a nice php 4.2.2 binary and when I say
ini_set("implicit_flush",true) ;
for ($i=0;$i<10;$i++) {
echo "boink\n";
sleep(2);
}
that' s what it does, instead of doing nothing and then dumping the output all at once like it does on Windoze.