  In this work we try to settle down the controversial predictions on the
effect of doubly magic nuclei $^{132}$Sn and $^{208}$Pb on the mass
distributions of fission fragments of super-heavy nuclei. For this we have
calculated the mass distribution of super-heavy nuclei from $^{286}$Cn to
$^{306}$122 within the dynamical 4-dimensional Langevin approach. We have found
that in "light" super-heavies the influence of $^{208}$Pb on the mass
distributions is present but negligible small. In "heavy" super-heavies,
Z=120-122, the (quasi)symmetric peaks and strongly asymmetric peaks at fragment
mass $A_F$ close to $A_F$=208 are of comparable magnitude.

Nuclear Theory;High Energy Astrophysical Phenomena;Nuclear Experiment