RunOnce not working on win xp sp2

[zammalabe]

does anyone know, on what services or what depends hkcu runonce and hklm runonce (ie (HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce and HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce) on windows xp sp2? i have nlited the source, removed a lot of services and drivers and other unneeded stuff, imported during unnattendedds setup with reg.exe into those hives some programs and batch files to execute, but seems that nothing happens :/ runonce.exe is present in the system and hklm/hkcu runoncex keys are working.

the same worked on windows 2000 professional sp4: i took my unnattended software installation via runonce and runoncex procedure from there