Why does my php / mysql code work differently when cron'd ?

Please see my script below.

If I run the script in my browser it works fine. if cron't it doesn't

It seems like the delete query isn't working.
The page which relies on the data shows twice as much data as it should, a duplicate of every record.

Any ideas?

<?php
 
list($usec, $sec) = explode(' ',microtime());
$querytime_before = ((float)$usec + (float)$sec);
 
include "../php/_con.php";
include "../php/_stdfuncs.php";
 
populate_front_temp_table();
 
list($usec, $sec) = explode(' ',microtime());
$querytime_after = ((float)$usec + (float)$sec);
$querytime = $querytime_after - $querytime_before;
$strQueryTime = '%01.4f';
echo sprintf($strQueryTime, $querytime);
 
function populate_front_temp_table() {
 
	global $server;
	global $db;
	global $user;
	global $pass;
	global $sBlankMySQLDate;
 
	$con = mysql_connect($server,$user,$pass);
 
	if (!$con) {
		die('Could not connect: ' . mysql_error());
		}
	else {
		mysql_select_db($db, $con);
 
 
		$sql = "DELETE FROM TEMP_FRONT;";
		mysql_query($sql) or die('Error, delete query failed');
 
		$sql = "INSERT INTO TEMP_FRONT(section, PadID, CatID, IconSoureURL, OsStr, PadURL, PageName, ProgramName, ProgramVersion, ReleaseStatus, English45, License, DownloadURL) SELECT 1, Pads.PadID, Pads.CatID, IconSoureURL, OsStr, PadURL, PageName, ProgramName, ProgramVersion, ReleaseStatus, English45, License, DownloadURL FROM `Pads` INNER JOIN `Downloads_Count` ON `Downloads_Count`.`CatID` = `Pads`.`CatID` AND `Downloads_count`.`PadID` = `Pads`.`PadID` WHERE `Downloads_Count`.`CatID` = 11 AND `Pads`.`ProgramName` LIKE '%DVD%' AND `Pads`.`License` = 'Freeware' AND RemoveMeDate='" . $sBlankMySQLDate . "' ORDER BY `Downloads_Count`.`tot_downs` DESC LIMIT 0 , 5;";
		mysql_query($sql) or die('Error, insert query failed 11');	
 
		$sql = "INSERT INTO TEMP_FRONT(section, PadID, CatID, IconSoureURL, OsStr, PadURL, PageName, ProgramName, ProgramVersion, ReleaseStatus, English45, License, DownloadURL) SELECT 2, Pads.PadID, Pads.CatID, IconSoureURL, OsStr, PadURL, PageName, ProgramName, ProgramVersion, ReleaseStatus, English45, License, DownloadURL FROM `Pads` INNER JOIN `Downloads_Count` ON `Downloads_Count`.`CatID` = `Pads`.`CatID` AND `Downloads_count`.`PadID` = `Pads`.`PadID` WHERE `Downloads_Count`.`CatID` = 120 AND RemoveMeDate='" . $sBlankMySQLDate . "' ORDER BY `Downloads_Count`.`tot_downs` DESC LIMIT 0 , 5;";
		mysql_query($sql) or die('Error, insert query failed 120');	
 
		$sql = "INSERT INTO TEMP_FRONT(section, PadID, CatID, IconSoureURL, OsStr, PadURL, PageName, ProgramName, ProgramVersion, ReleaseStatus, English45, License, DownloadURL) SELECT 3, Pads.PadID, Pads.CatID, IconSoureURL, OsStr, PadURL, PageName, ProgramName, ProgramVersion, ReleaseStatus, English45, License, DownloadURL FROM `Pads` INNER JOIN `Downloads_Count` ON `Downloads_Count`.`CatID` = `Pads`.`CatID` AND `Downloads_count`.`PadID` = `Pads`.`PadID` WHERE `Downloads_Count`.`CatID` = 120 AND `Pads`.`License` = 'Freeware' AND  RemoveMeDate='" . $sBlankMySQLDate . "' ORDER BY `Downloads_Count`.`tot_downs` DESC LIMIT 0 , 5;";
		mysql_query($sql) or die('Error, insert query failed 120 free');
 
		$sql = "INSERT INTO TEMP_FRONT(section, PadID, CatID, IconSoureURL, OsStr, PadURL, PageName, ProgramName, ProgramVersion, ReleaseStatus, English45, License, DownloadURL) SELECT 4, Pads.PadID, Pads.CatID, IconSoureURL, OsStr, PadURL, PageName, ProgramName, ProgramVersion, ReleaseStatus, English45, License, DownloadURL FROM `Pads` INNER JOIN `Downloads_Count` ON `Downloads_Count`.`CatID` = `Pads`.`CatID` AND `Downloads_count`.`PadID` = `Pads`.`PadID` WHERE `Downloads_Count`.`CatID` = 15 AND `Pads`.`ProgramName` LIKE '%Help Desk%' AND RemoveMeDate='" . $sBlankMySQLDate . "' ORDER BY `Downloads_Count`.`tot_downs` DESC LIMIT 0 , 5;";
		mysql_query($sql) or die('Error, insert query failed 15');
	
		$sql = "INSERT INTO TEMP_FRONT(section, PadID, CatID, IconSoureURL, OsStr, PadURL, PageName, ProgramName, ProgramVersion, ReleaseStatus, English45, License, DownloadURL) SELECT 5, Pads.PadID, Pads.CatID, IconSoureURL, OsStr, PadURL, PageName, ProgramName, ProgramVersion, ReleaseStatus, English45, License, DownloadURL FROM `Pads` INNER JOIN `Downloads_Count` ON `Downloads_Count`.`CatID` = `Pads`.`CatID` AND `Downloads_count`.`PadID` = `Pads`.`PadID` WHERE `Downloads_Count`.`CatID` = 9 AND `Pads`.`ProgramName` LIKE '%DVD Ripper%' AND RemoveMeDate='" . $sBlankMySQLDate . "' ORDER BY `Downloads_Count`.`tot_downs` DESC LIMIT 0 , 5;";
		mysql_query($sql) or die('Error, insert query failed 9');
	
 
	}
 
	mysql_close($con);
 
}
 
?>

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