WP-DBManager 2.61  has been released and it fixes a security vulnerability which will allow user to download your wp-config.php. If you do not use the default backup folder path, you are not affected by this.
However, most users are affected and it is recommended that you upgrade WP-DBManager to 2.61.
WP-DBManager 2.62 will be out on Tuesday with added nonce security and auto-repair functionality.
Sorry for any inconvenience caused.
Download: WP-DBManager 2.61