Comment 1 for bug 612341

Could you give more information about the laptop? Exact reference, and the output of a few commands (once you booted with acpi=off) :
 - lspci -vvnn
 - dmesg
 - cat /proc/cpuinfo
 - lsusb -v
You can use apport-collect to upload all this information, and more: http://manpages.ubuntu.com/manpages/lucid/man1/apport-bug.1.html