Ok, short update. I tested the update to doxygen 1.7.x and also updated the header and footer files this time. This means larger layout changes and a completely different style. But IMHO also far better usage and comprehensiveness. Moreover, also an integrated search function. Just check it out yourself. I've copied a version to the SF servers. Just note that this link won't be permanent. Once we figured out the proper style and with the next release of Irrlicht we will overwrite the existing API docs link and remove this temporary one!http://irrlicht.sourceforge.net/docutemp/index.html
Please report any feedback here. I'll move this topic to Open Discussion. If someone feels that the search function should be kept in the FAQ forum anyway, we can create a new thread afterwards.
BTW: I've noticed that the member lists are not properly working. The layout is completely broken. Could be that I still have a wrong config item enabled, or doxygen has a problem. Or my header files are still not perfect. But something should be done there before we release this.