window won't close

I have a page that opens a new window, lets the user chose some options and then when they hit submit, the cgi page does it's thing and then closes the new window. I have one user, though, in which the window will not close. We are all using IE 5.5 with very similar computers all running WIN95. I can't figure out why it only happens with this one user.

I am using the following code to redirect the parent window and then close the pop up window:

<script language=javascript>
 function go() {
  top.opener.window.location.href = "http://wheretoreturn";
  setTimeout(closemyself(), 10000);
 }
 function closemyself() {
  self.close();
 }
</script>

It works fine for everyone else. What could be the problem on this one pc? (Other than this little quirk, the pc has no other known problems and loads all other web pages correctly.)

When the script executes, the parent window does not get redirected and the child window does not close. I do not get any javascript errors in the browser. It just seems to die right there. I can close the window manually and then everything works fine again until they open the child window back up.

I have also tried changing the duration of the timeout and that seems to have no effect; the results are the same.

Thanks.