Description:
------------
Hi, 

Strangely in some cases the email is being sent twice to recipient, but not always only sometimes.

Reproduce code:
---------------
$emailPrt = "mfaryad@maydaygroup.com";
	$subject = "Booking Confirmation Ref. - CN$bookingref";
	$header="From: bookings@travelextras.com";

	$bk = "BOOKING HAS BEEN MADE\n------------------------------------\nBooking ref is: CN$cn\n------------------------------------\n";
	$cusomerName="Customer Name:- ".$leadpassenger;
	$customerEmail="Customer Email:- ".$email;
	$customerTag="Customer Tag / adv_code :- ".$advCode;
	$apRow2 = "Airport parking at $apLocation\nStart Date: $apStartDate\nEnd Date: $apEndDate\n";
	$productDetails = $bk.$cusomerName."\n".$customerEmail."\n".$customerTag."\n".$clientTotal."\n"."Product Details:". $htlRow." ".$crRow." ".$apRow2." ".$tiRow." ".$supp."  ";
	
	if($emailPrt)
	{
		mail($emailPrt,$subject,$productDetails,$header);
	}

Expected result:
----------------
I should get an email at mfaryad@maydaygroup.com as below

BOOKING HAS BEEN MADE
------------------------------------
Booking ref is: CN970546
------------------------------------
Customer Name:- Wilde/Michael/Mr
Customer Email:- m.wilde@sheffield.ac.uk
Customer Tag / adv_code :- park


Total: ?42.00
Product Details:  Airport parking at EMA ECONOMY LONG STAY 7 (ON-SITE) Start Date: 06.06.05 End Date: 13.06.05
    



Actual result:
--------------
In some cases it sends duplicate email, same email up 2 or 3 times its strange, hope you guys can help.