Yes it was.
But I just had the confirmation it can't work all the time. I made a HUGE mistake when installing a kext today and erased my extension folder completly. I thankfully got an iPC live DVD lying around and copied all the kext back to my HD and applied all the patches as I'm used to (I'm not a boot-132 user). But, for some reason an instance of AppleACPIPS2Nub seems to load even if I can't find where it comes from (not from AppleACPIPlatform.kext, I don't have an Extra folder) and I got stuck keys as you guys, even with that trick. So I tried something else that seems to work (for me, with iPC extensions):
Let AppleACPIPS2Nub.kext load, install the original ApplePS2Controller.kext, remove VoodooPS2Controller.kext, replace ApplePS2Trackpad.kext by VoodooPS2Trackpad.kext, edit the plist as I told before, replacing org.voodoo.driver.PS2Controller by com.apple.driver.ApplePS2Controller
See solution below.
You'll get a working Keyboard and double finger scroll.
However, it seems to be iPC related (I had no problem with an updated Kalyway), it would be interesting to know if the people who get the problem are running an iPC install or something else.