B and B − V light curves of the 2003 (bottom) and 2008/9 (top) eclipses. In the middle panel, we present all available line profiles of the Na i doublet and Hα for epoch 9 (superposition of two lines: thick dashed with thin solid) and 10 (solid line). The positions of the continuum levels refer to the orbital phases. The right-hand panels show a zoom of the central part of left-hand panels as indicated by vertical dashed lines. The arrows indicate the shallow minima in the external parts of the eclipses observed about 35 days before and after mid-eclipse at both last epochs (both last eclipses seem to be longer than expected and lasted about 90 days).