The attached file is a patch for this bug.
--- a/installer/build/boot/x86/f6.txt 2010-10-05 20:52:51.000000000 +1100 +++ b/installer/build/boot/x86/f6.txt 2010-10-05 20:53:56.000000000 +1100 @@ -10,7 +10,7 @@ Some IBM ThinkPads Protect I/O port regions 0freserve=0biobase0f,0bextent07[0f,0b...07] Laptops with screen display problems 0fvga=77107 Use first serial port at 9600 baud 0fconsole=ttyS0,9600n807 -Force use of generic IDE driver 0fgeneric.all_generic_ide=107 +Force use of generic IDE driver 0fall_generic_ide=107 Possible (temporary) workarounds for lockups or other hardware failures: disable buggy APIC interrupt routing 0fnoapic nolapic07 (partly) disable ACPI 0facpi=noirq07 or 0facpi=off07