Prosoft Engineering has released Drive Genius 3.1.1, an updated version of its drive repair and recovery program for Mac OS X.

The new version, a 16 megabyte download, offers the following fixes and features:

- Live defrag can now be canceled (on some machines this may require a wired keyboard).

- DrivePulse™ is now installed on a per-user basis instead of for all users.

- The Information tool now displays use-based statistics for drives in the Details tab.

- DrivePulse™will open a Finder window for mounted volumes with a click on the disk icon in the DrivePulse™menu.

- Initial support for Mac OS X 10.7 Lion.

- Bug Fix: Defrag and Repartition now work with native “large block” (4KB) drives.

- Bug Fix: Minor Duplicate issues with native “large block” (4KB) drives.

- Bug Fix: Stability improvements to DriveSlim™while searching for files.

- Bug Fix: Stability issue if a drive was removed from the system while a defrag was in progress.

- Bug Fix: The overview information for unmounted volumes was displaying free space as used space.

Drive Genius retails for US$99 and requires an Intel-based Mac running Mac OS X 10.5.3 or later installed to install and run.