Is nncron started as service? - Yes
Is TB started at startup? - No, started much after manually, after DropBox exe has completed syncing.
Are there any tasks depending on/ of influencing this one? -No
Maybe pause needed? - Already has long manual pause.
Maybe (?) task authorization needed? - Don't know, it doesn't need it after 1st lauch of TB. ie. if close TB wait a bit to make sure it is closed, and launch again, WatchProc does trigger and shuts down DropBox.exe