Unless Canonical wants liability for
a) Individual user's destroyed hardware
b) Crippling reputation damages, especially against the 'new to linux' groups
I'd echo the suggestion to pull the liveCD's until this is fixed.
When new linux users discovered permanently corrupted hardware after trying Ubuntu, and this gets out in the wider webs, all of Ubuntu's efforts at promoting Ubuntu will also be destroyed.
Breaking known good hardware is a problem greater than keeping to a self-imposed delivery schedule.
Unless Canonical wants liability for
a) Individual user's destroyed hardware
b) Crippling reputation damages, especially against the 'new to linux' groups
I'd echo the suggestion to pull the liveCD's until this is fixed.
When new linux users discovered permanently corrupted hardware after trying Ubuntu, and this gets out in the wider webs, all of Ubuntu's efforts at promoting Ubuntu will also be destroyed.
Breaking known good hardware is a problem greater than keeping to a self-imposed delivery schedule.