Tiling with liquid nails - Update
I used the Roof and Gutter silicon as against tile adhesive as suggested by rod1949 for the next section of 40 150mm square wall tiles in the kitchen and it works a treat.
It's easier, healthier (no fine tile adhesive dust), cleaner, quicker and cheaper. To do the 40 tiles I used about a quarter of a tube of Roof and Gutter silicon, cost about a dollar as against about $5's worth of tile adhesive.
I laid 5 spots of Roof and Gutter silicon about the size of a five cent piece on each tile. This seems to be more than adequate.
At one point I cracked a tile while screwing on a power point. This was caused by insufficient support behind the tile's lugs each side if the cut out for the power point. To fix this, when I replaced the tile I added extra silicon behind the tile's lugs to give them more support.
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http://users.tpg.com.au/presch/images/tile.jpg
The tiles were laid on a recently painted plasterboard wall. When I removed the broken tile the Roof and Gutter silicon was so strong that it ripped off some of the plaster's paper surface.
As the Roof and Gutter silicon is designed for outdoor use holding bits of roof and gutter etc. together, I don't think that longevity will be a problem.
Hope this info is useful to others.
PCR