I have been using CA for about 4 years with mostly good luck and a few stuck fingers.  Lately I have had problems with it sticking anything together except fingers.  I have tried 3 different brands of the thin (instant) and am getting almost to the point of violence.  If I use a little it doesn't stick, if use lots, it does't stick.  If I use a heat gun and clamps or pins it will bond, but not like it should.  I never see the little puff of smoke that I used to see either.  Could my building room be to cool?  It is between 60 and 65 degrees.  I have even put the bottle of CA in very warm water, and that didn't see, to help any either.  Surely 3 different brands can't all be bad,,,can they?
Lee TGD

Not sure where you live,but a lack of moisture will make it more difficult for the CA to kick. I beleive that it is the moisture in the substrate that kicks the adhesive.

Your CA has gone stale.  With age especially after opening CA's abilty to catalyze deteriorates. Unsatisfactory performance can be expected as early as about 60 days.  Yes it seems to work better than ever on your fingers.  The lower price brands seem to deteriorate sooner.

Suggest purchasing smaller bottles.  Store in a freezer until opened.

Clayton Smith

The ol' brittle-bottle burst?  I've done that one.

The most amusing CA incident I've had is when I glued both hands to the bench.  It was late at night, I was in the basement, and my wife was sleeping in the room above.  Somehow I woke her up, which is nontrivial.  She came downstairs, got the nitro out of the nearby cabinet, and gave it to me.  The amusing part is how she treated the entire incident as routine. 

It is also highly recommended that one make sure one's hands are totally free of CA prior to relieving one's self.

Glen

Thick CA pretty much stays put where you drop it. Last six months or so I've switched to using the thick stuff most of the time. The mystic travels of thin CA, got tired of trying to out think the wick and drip.