I displayed screen, but it was not displayed after having upgraded it from 1.4.6 with 1.6.6 even if it passed for 30 minutes.

Because a CPU useage of MySQL was high, I confirmed what run.

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mysql> show processlist;
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28 rows in set (0.01 sec)
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I think that DBstart() and DBend() are necessary.
\frontends\php\include\profiles.inc.php

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//----------- ADD/EDIT USERPROFILE -------------
function update_profile($idx,$value,$type=PROFILE_TYPE_UNKNOWN,$idx2=null,$source=null){
global $USER_DETAILS;
if($USER_DETAILS["alias"]==ZBX_GUEST_USER) return false;

if(profile_type($type,'unknown')) $type = profile_type_by_value($value);
else $value = profile_value_by_type($value,$type);

if($value === false) return false;

$sql_cond = '';
if(zbx_numeric($idx2)) $sql_cond = ' AND idx2='.$idx2.' AND '.DBin_node('idx2');

if(profile_type($type,'array')){

$sql='DELETE FROM profiles '.
' WHERE userid='.$USER_DETAILS["userid"].
' AND idx='.zbx_dbstr($idx).
$sql_cond;

DBstart(); <---- Here is DBstart()
DBexecute($sql);
foreach($value as $id => $val)

{ insert_profile($idx,$val,$type,$idx2,$source); }

$result = DBend(); <---- Here is DBEnd()
}
else{
$sql = 'SELECT profileid '.
' FROM profiles '.
' WHERE userid='.$USER_DETAILS['userid'].
' AND idx='.zbx_dbstr($idx).
$sql_cond;

<---- DBstart() is necessary for here!
$row = DBfetch(DBselect($sql));

if(!$row)

{ $result = insert_profile($idx,$value,$type,$idx2,$source); }

else{
$val = array();
$value_type = profile_field_by_type($type);

$val['value_id'] = 0;
$val['value_int'] = 0;
$val['value_str'] = '';

$val[$value_type] = $value;

$idx2 = zbx_numeric($idx2)?$idx2:0;
$src = is_null($source)?'':$source;

if(is_array($value))

{ $val[$value_type] = isset($value['value'])?$value['value']:''; $src = isset($value['source'])?$value['source']:$src; }

if(is_null($val[$value_type])) return false;

$sql='UPDATE profiles '.
' SET value_id='.$val['value_id'].','.
' value_int='.$val['value_int'].','.
' value_str='.zbx_dbstr($val['value_str']).','.
' type='.$type.','.
' source='.zbx_dbstr($src).
' WHERE userid='.$USER_DETAILS["userid"].
' AND idx='.zbx_dbstr($idx).
$sql_cond;

$result = DBexecute($sql);
}
<---- DBend() is necessary for here!
}

return $result;
}
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