I have had no problem with them.

Be sure you use THIN CA. Medium or thick will cause problems because they won't wick into the hinge correctly. From my experienc... the cheap grade of thin CA seems to work really well for the hinges when its useless for anything else... (the 3 tiny bottles for $1 at the Dollar General chain stores are what I use on the hinges. Useless for building. Useless for repairing. Great for CA hinges.)

If you draw a line on each side of the hinge with grease pencil or crayon and be sure that line is the hinge line when you apply the CA, you won't have CA in the section that will bend. That will make the hince flex more freely and will make it survive longer. (they last about 5 years normal use this way.)