try to use the single update not the combo update...

if you are on 10.5.2 update to 10.5.3 ect until you reach 10.5.5

open the update and drag the pkg package into the downloads folder the run the amd software update download only airport update or something similar and check the modify only box...

when the airport update is downloaded it will rebuild it along with the 10.5.? pkg update you put in the download folder (or what ever else is in that folder) when its finished open the downloads folder and you will see a newly created modified folder with the 10.5.? update in it ... which is now ready to run.....don't run the airport update (delete it ) for when you want to modify the next apple 10.5.? update...

http://www.apple.com/downloads/macos...acosx_updates/

there are kext issues that need taken care of whilst updateing but i havent got much info on that...

hope thais helps ...if not i tried....

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Nvidia nForce3Ultra 250 Ultra chipset
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