That really doesn't sound like a live CD issue. It sounds more like a kernel thing.

James

On Mon, 2011-08-29 at 15:34 +0100, wbsec.flive@new.rr.com wrote: 
I have a Dell Latitude E6520 and tried to boot to a live CD of Fedora 15. The boot up was going fine until midway through and it dropped to a debugging shell with this message. 

ehci_hcd 0000:00:1a.0: dma_pool_free ehci_qh, f62b5060/fffff060 (bad dma)

I also tried Fedora 14 live CD and Ubuntu 10.10 with similar results.
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