2.6.24.3-34 Crashes

[Jim]

F8 i386
If I put acpi=off in menu-lst , as such rhgb quite  acpi=off   and I 
reboot, when it gets to "Uncompressing Linux ..OK Booting the kernel"   
I get a long repeating of:

Unknown bus type 4
             "
             "
             "

About 10 lines of same and then the boot process "Locks Up" , If I 
reboot by a earlier Kernel and remove  acpi=off from menu-lst and reboot 
2.6.24.3-34 , it completes booting and goes into Desktop.

Is acpi=off a no no in Fedora anymore.
I 'm having a couple of problems with audio and webcam working and I 
wanted to see if  acpi=off  would make any difference