drush update error

When I try to update my modules via drupal the updates are found but updating them fails.

root@kabbalah:/var/www/allsites# drush -l http://allsites.profarius.com pm update
Update information last refreshed: Sat, 12/13/2008 - 18:27

Update status information on all installed and enabled Drupal modules:
Name Installed version Recommended version Status

---- ----------------- ------------------- ------
[....]
SimpleMenu 6.x-1.0 6.x-1.2 Update available
Table Manager 6.x-1.x-dev 6.x-1.x-dev Up to date
Terms of Use 6.x-1.8 6.x-1.8 Up to date
Token 6.x-1.11 6.x-1.11 Up to date
Disposable e-mail protection 6.x-1.x-dev 6.x-1.x-dev Up to date
Views 6.x-2.1 6.x-2.1 Up to date
XML Sitemap 6.x-1.x-dev 6.x-1.x-dev Update available

Updates will be made to the following projects:
Event [event-6.x-2.x-dev], SimpleMenu [simplemenu-6.x-1.2], XML Sitemap [xmlsitemap-6.x-1.x-dev]

Note: Updated modules can potentially break your site. It's not recommended to update production sites without prior testing.
Note: A backup of your package will be stored to backups directory if no .svn directory is found.
Note: If you have made any modifications to any file that belongs to one of these projects, you will have to migrate those modifications after updating.
Do you really want to continue? (y/n): y
drush: Unable to checkout event from cvs.drupal.org.
root@kabbalah:/var/www/allsites#