My first thought was that the Apple Keyboard Manager (KBDMGR.EXE) got reinstalled, but I couldn't find it in the Windows Task Manager, or MSCONFIG, so maybe Apple has renamed this program which typically causes large DPC spikes every 30 seconds or so. Even after updating those drivers (which has usually resulted in reduced DPC Latency performance in the past under Bootcamp 2.0), I was still getting huge DPC spikes when viewing the system's performance in DPC Latency Checker. I found that the drivers installed by Bootcamp 3.0 for the NVDIA video and RealTek audio hardware (earlier versions were troublesome) are fairly recent, but not as new as the versions of the drivers that can be found on their respective company's websites. My initial foray into Bootcamp 3.0 has ended with failure, and I am now restoring my Windows partition from a cloned backup - thank you Winclone!īootcamp 3 is installed from the Snow Leopard installation disk under Windows (XP SP3 in my case), and consists largely of newer drivers for all the Mac hardware.

Apple software update bootcamp 3.0