== I have ==
seen this with '''Intel Graphics drivers in extensions that are not needed'''.
I safe booted, and looked in Sys/Lib/Extensions and pulled all the video drivers that were non ppc and some ppc that were not germain to the AL G4 (know your VGC before attempting this) SO not to lose them I make an Extensions Disabled folder in Sys/Lib and moved them into there. Compare the Extensions from your "normal or install set" with the "safe set".
''Your milage may vary.''
'''Remember to return and mark accepted the answer that best solves your problem.'''
Good luck,
N