Description:
------------
This is a weird bug, because I do only get it in some browsers.  
It works fine in IExplorer, links, but not in Konqueror. All  
browsers are "cookies enable". I have a class, with some  
vars. When I use session_start  in a class->function, i cannot  
access $this nor $this->vars  
 
I read some similar bugs are in php4.0 and solved in 4.1.0 and 
I have 4.1.2 

Reproduce code:
---------------
class PayUser {
  var $pay_user, $passwd, $ses_id, $db, $new;
  function PayUser($id) {
    include_once("base.php");  // this is where i create $db
    $this->db = $db;
    $select = $this->db->exec("SELECT * from pay_users where p_user='$id'");   // this means $this->db exists and it works 
  /// code omited..
  }
  function login($pass) {
	// print_r($this)  //  before the session_start()  prints me the object
    session_start();
     print_r($this)  /// after session_start() $this is not asigned
      $sid = session_id();
      $sql = "UPDATE pay_users SET ses_id='$sid' where p_user='".$this->pay_user."'";
      $this->db->exec($sql);  // Fatal error: Call to a member function on a non-object in this line...  because $this does not exist 
 // more code omited


Expected result:
----------------
in the print($this) i should expect to print  
payuser Object ( 
    [db] => database Object ( 
            [con] => adodb_postgres7 Object ( 
                    [databaseType] => postgres7 
                    [hasLimit] => 1 
                    [ansiOuter] => 1 
                    [dataProvider] => postgres... 
 
and the $this->db->exec($sql);  should be executed, not to 
give the Fatal error: Call to a member function on a non-object 
in this line 
 
 

Actual result:
--------------
the error... and the $this is lost...