The module is without any critical bugs and at beta 7, since 2009-Jan-24.
Please, get it out of beta, so Drupal's security community:
1) starts monitoring for any security issues within the module and
2) can warn the community (e.g. via http://lists.drupal.org/mailman/listinfo/security-news), if such issues arise.
More info:
http://www.palantir.net/blog/responsible-module-maintainership