Problem with mail function

Hi there... I have a problem mailing out approx. 180 emails (no attachments) using the mail() php function. I loop through the email table once, sending the email to everyone in the list. The problem is that my page seems to time out when I send the emails, and it refreshes itself. So if I don't manually stop the browser after say, 10 seconds, the recipients in the email table get the email more than one time. Maybe I shouldn't be trying to send that many emails at a time. I am on apache using mysql and php... -- Faye Keesic Computer Programmer Analyst/Web Page Design