  Low energy \bar{K}N interactions are studied within Unitary Chiral
Perturbation Theory at next-to-leading order with ten coupled channels. We pay
special attention to the recent precise determination of the strong shift and
width of the kaonic hydrogen 1s state by the DEAR Collaboration that has
challenged our theoretical understanding of this sector of strong interactions.
We typically find two classes of solutions, both of them reproducing previous
data, that either can or cannot accommodate the DEAR measurements. The former
class has not been previously discussed.
