Pagebreak in columns

[Michal Kvasnicka <quasar@econ.muni.cz>]

Good evening.

I typeset a document in two columns on a grid. Sometimes a page is one 
row longer than it should be. How can I make it not to do it? (I don't 
care for widows and things like that, I can correct them manually). I 
know this was disscussed before but I can find the text of the thread in 
any archive, just the link. Any hint?

Many thanks for any hint. Your sincerely
Michal Kvasnicka

I set it approximately like this (just major setting mentioned):

\setuplayout
        [topspace=1cm, height=19cm, lines=43,
        backspace=1cm, width=128mm,
        header=0pt, headerdistance=0pt,
        footer=2\baselineskip, footerdistance=0pt,
        grid=yes]
\setupcolumns
        [n=2, tolerance=tolerant, distance=1em]
\widowpenalty=0\relax
\clubpenalty=0\relax
\brokenpenalty=0\relax
\normalbottom

\starttext
\startcolumns
    ...
\stopcolumns
\stoptext