I have 64 bit Ubuntu 10.04 lts installed. I have switchable graphics intel/nvidia. I tried to install ironhide but it does not support lucid 10.04 lts.

So my solution was to reinstall ll.10 oneric instead. However I burned downloaded 2x and burned two cds and it will not install. I get the following error when I try to boot from the live cd
udevd [112]:timeout: killing '/sbin/modprobe -bv pci:v00008086d0000126sv00001028sd00000571bc03sc00i 00' [187]

I even downloaded a third time and tried to boot from a usb drive but still not progress.