  In 5 dimensions the electroweak symmetry can be broken by boundary
conditions, leading to a new type of Higgsless theories. These could in
principle improve on the 4D case by extending the perturbative domain to
energies higher than $4 \pi v$ and by allowing a better fit to the electroweak
precision tests. Nevertheless, it is unlikely that both these improvements can
be achieved, as we show by discussing these problems in an explicit model.
