Re: Danish enigma

I cannot answar defititly about Danish, but can give some explantion
about the use in Norwegian that have the same deponens.

In Norwgian, adding an -s to an active present prticiple to give a
passive or deponens give a result that is difficult to pronounce.
Therefor the form *lykts is seldome used.

The officially corect form used is lykkes, that is equal to
infinitive/present. In dayly speach you can also hear lyktes, a form
I prefere.

So- in Norwegian these deponense forms, I think, is a consequence of
the need to make the forms easier to prononce.