Same here, we think that when this happens something else is in the
background is pushes thing to start like App Store updates or
depnotify.app who wants to start asap.. weird.we are in the proces to
make something to not start any thing till the ass...
Same here, we found that the Mac App store apps tried to update directly
the apps after creating the local account.we have scoped this out and it
worked for a while and then it started again...pain in the ass!