The first one could be "Justin Rage" Wren's saga (always have, always will and never have, never will), you can find both the stories here http://www.livejournal.com/tools/memories.bml?user=wren_kt7oz&keyword=Fic:%20Justin%21Rage&filter=all

The fourth one is "the weirdest thing just happened" by Acacia, and you can find it on the right bar clicking on Dl More lost Fics:)

About the second and the third one, sorry I don't know it^^