Why would Super Glue take an hour to harden?
Superglue works best when spread in a thin layer, a "blob" will take longer to harden because a thin skin forms on the surface, slowing the curing:

https://en.wikipedia.org/wiki/Cyanoacrylate


  In general, cyanoacrylate is an acrylic resin that rapidly polymerises
  in the presence of water (specifically hydroxide ions), forming long,
  strong chains, joining the bonded surfaces together. Because the
  presence of moisture causes the glue to set, exposure to normal levels
  of humidity in the air causes a thin skin to start to form within
  seconds, which very greatly slows the reaction. Because of this
  cyanoacrylate is applied thinly, to ensure that the reaction proceeds
  rapidly and a strong bond is formed within a reasonable time.


This question over on electronics.stackexchange.com talks about glues used to attach components to PCB's. That's probably a better site to ask any followup questions about the best way to glue components to PCB's.