  We present new observations of the white dwarf sequence of the old open
cluster NGC 6791. The brighter peak previously observed in the white dwarf
luminosity function (WDLF) is now better delineated, and the second, fainter
peak that we suggested earlier is now confirmed. A careful study suggests that
we have reached the end of the white dwarf sequence. The WDs that create the
two peaks in the WDLF show a significant turn to the blue in the
color-magnitude diagram. The discrepancy between the age from the WDs and that
from the main sequence turnoff remains, and we have an additional puzzle in the
second peak in the WDLF. Canonical WD models seem to fail --at least at
~25%-level-- in reproducing the age of clusters of this metallicity. We discuss
briefly possible ways of arriving at a theoretical understanding of the WDLF.
