queXF 1.14.0 has been released today on Sourceforge
This release adds a new feature where page edge detection has been greatly improved. queXF can determine if a page corner has been detected incorrectly and repair it. This should greatly improve page alignment where scans are not ideal. Please report any successes or failures using the Launchpad bugs or answers system.
To upgrade (from queXF 1.13.x)
1. Backup config.inc.php (copy to config.inc.php.bak)
2. Extract the new package over your existing installation
3. Copy your config.inc.php.bak file over the extracted config file