I have the same problem on 2 laptops, one i386, one amd64. I can solve the problem by toggling wireless on and off during boot (both use the ipw3945 driver).
-- soft lockup detected on CPU#0! when booting from feisty-desktop-i386 https://launchpad.net/bugs/80502 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
