bv> Does anyone have any ideas about this issue? Has anyone
    bv> experienced it on a PowerBook?

My powerbook 2400 does the same thing---it powers off a few lines
after the cardbus initialization.  I dunno if it's actually related to
cardbus or to something that happens right after cardbus, but that's
when it happens.  The problem showed up between 1.6ZG and 2.0 BETA
2004-05-27.

-- 
Le fascisme est la dictature ouverte de la bourgeoisie.
		-- Georg Dimitrov