Solid Hardwood, Engineered and Laminate Flooring - Quarter Rounds on Concrete/Plaster Walls?

I've got laminate hardwoods in my house and installed the quarter rounds by using Liquid Nails to glue the quarter rounds to the wall.
The quarter rounds are "peeling off" in some spots and it's just not working. Is there some type of nail or nail gun that I could use for concrete and plaster walls? Or should I try installing baseboards instead?

Is the plaster directly on brick or block? If the plaster is on a wall with studs, use longer nails to reach through the plaster and into the studs. If you install baseboard first you will still need to get to the studs. Real plaster walls usually have a ground at the bottom that was used to set the level of the finished plaster. Trim and baseboard are typically attached to the ground. The baseboard hides the ground and the quarter round covers the baseboard/floor gap. Baseboard should be attached to the wall, quarter round to the floor.

http://www.nofma.org/installation2.htm

Shoe molding. Nail this to the baseboard, not the flooring, after the entire floor is in place.

So does woodfloorsonline
http://www.woodfloorsonline.com/products/moldings_hardwood.html#B

On Wall Base or Quarter Round moldings, never restrict the hardwood floors natural contraction/expansion movement by driving the fasteners at a downward angle. Rather, attach the moldings to the wall or vertical surface

Yes, you are right that I cannot nail or attach anything to the floor. It's a floating floor...

But my question is what should I use to attach baseboard or quarter round with? My walls are concrete and metal inside with plaster on the outside. I live in an industrial condo.

Thanks for your help.

I know NOFMA disagrees. But every old house I have worked on has the quarter round attached to the floor. This might indeed be a problem with the new 'engineered' floors. But a nail every 2 feet through 3/4 inch quarter round has not seemed to cause any problems for many, many years in many, many houses. The older books I have use this method to avoid developing a gap between the quarter round and the floor as things settle and move and the joists shrink across their height.

http://doityourself.com/fasteners/fastening.htm
I have no direct experience with attaching molding to concrete but maybe this can help.
One option would be to use a more substantial fastener and then cover the hole made by using a plug. I suspect that rising humidity had something to do with the first try not staying attached.
If no other person has a great idea, you might try Ken Fisher aka Hardwood guy's web site (click on the name of the moderaotrs) for a direct response from a pro who probably has a lot more experience than people who much more frequently deal with conventional environments.

As for nailing the molding to the floor, I would never want to restrict the wood floor, since the floor has more problems if something expands or contract than a piece of molding would.