Apple has been negligent in releasing some of the source code from the BSD and LGPL (Lesser General Public License) components of WebKit, reports say. What would become WebKit is based partly on the KHTML and KJS in KDE Project's Konqueror browser, and Apple has promised to publish all modifications of related open-source material. The problem is that no source code has been published in connection with iOS 4.3, 4.3.1, 4.3.2 or 4.3.3, even though iOS' Safari web browser is based on WebKit.