conflict with drush

hello,

securepages breakes the drush module http://drupal.org/project/drush with the following error:

user1@machine:~/html/drupal$ sites/all/modules/drush/drush update -l http://example.com -d
Drush bootstrap phase : _drush_bootstrap_drupal_root() [0.114 sec] [bootstrap]
Initialized Drupal 6.14 root directory at /home/www/user1/html/drupal [0.154 sec] [notice]
Drush bootstrap phase : _drush_bootstrap_drupal_site() [0.156 sec] [bootstrap]
Initialized Drupal site example.com at sites/example.com [0.201 sec] [notice]
Drush bootstrap phase : _drush_bootstrap_drupal_configuration() [0.203 sec] [bootstrap]
Drush bootstrap phase : _drush_bootstrap_drupal_database() [0.248 sec] [bootstrap]
Successfully connected to the Drupal database. [0.248 sec] [bootstrap]
Drush bootstrap phase : _drush_bootstrap_drupal_full() [0.279 sec] [bootstrap]
session_start(): Cannot send session cookie - headers already sent by (output started at [warning]
/home/www/user1/html/drupal/sites/all/modules/drush/includes/drush.inc:439) [0.29 sec]
session_start(): Cannot send session cache limiter - headers already sent (output started at [warning]
/home/www/user1/html/drupal/sites/all/modules/drush/includes/drush.inc:439) [0.291 sec]
Cannot modify header information - headers already sent by (output started at [warning]
/home/www/user1/html/drupal/sites/all/modules/drush/includes/drush.inc:439) [0.349 sec]
Cannot modify header information - headers already sent by (output started at [warning]
/home/www/user1/html/drupal/sites/all/modules/drush/includes/drush.inc:439) [0.349 sec]
Cannot modify header information - headers already sent by (output started at [warning]
/home/www/user1/html/drupal/sites/all/modules/drush/includes/drush.inc:439) [0.349 sec]
Cannot modify header information - headers already sent by (output started at [warning]
/home/www/user1/html/drupal/sites/all/modules/drush/includes/drush.inc:439) [0.349 sec]
Drush command could not be completed. [0.635 sec]

deactivating securepages solves this error. It would be nice if this behaviour could will be fixed.

many thanks

best regards

Stefan