an error in verbose "AppleUSBEHCI: Could not get chip to halt within 100ms." is happening while trying to install 10.6.x macosx.
it's due to missing elements inside DSDT bios configuration.
it's happening at least on Packard Bell imedia pv.u58 motherboard.
the board chipset is: NVIDIA GeForce 6150 SE and NVIDIA nForce 430
please share your DSDT.aml and or dsl in order to fig-out what's missing.
original BIOS ACPI files are attached.