I'm pretty sure the code coming out of Apple's WebKit team is more than what the LGPL legally requires -- remember, LGPL is much more lax about what you can do in terms of building on the work without having to open up your own stuff.<p><i>Edit:</i> And... yeah, they do go above and beyond, since there are bits in there that they've written and licensed BSD. If that code was encumbered by LGPL they wouldn't have been able to relicense it or claim original authorship.