Hi Peter,

I had noticed such strange page breaks before and since it was always in small documents (maths problem sheets), I used an elementary workaround which consists in adding a \medskip or \smallskip before every \section. Actually analogous bad page breaks happen in Plain TeX with \beginsection.
Regarding the minimal example you sent, adding 
\setuphead[section][before=\smallskip]
to the top of your document, solves the problem appearing in the first section. I don't know whether this solves all other strange page breaks or not.

Best regards: OK

On 6 mai 2010, at 10:13, Peter Münster wrote:

> On Wed, May 05 2010, Wolfgang Schuster wrote:
> 
>> The *strict prevents widows and orphans (comment \setuplayout in this 
>> example)
>> but the important setting here is \setupalign[line].
> 
> Hello Wolfgang,
> 
> I know that \setupalign[line] means: last line should touch the bottom.
> It can be useful, but it's not always what I want.
> 
> Here an example from real life (not the content... ;). I hope you agree,
> that there should be done something in the default setup of ConTeXT:
> 
> %\setuplayout[setups=*strict]  % this helps only in some cases...
> %\setupalign[line]  % this means "flushbottom" and I don't always want that
> \def\Lines#1{\dorecurse{#1}{\dorecurse{17}{text }}\par}
> \def\Table#1{\starttable[|l|]\dorecurse{#1}{\NC bla \NC\AR}\stoptable}
> \showframe
> \starttext
> \completecontent
> \section{bla}
> \Lines{10}
> \Lines3
> \section{bla}
> \Table9
> \section{bla}
> \subsection{bla}
> \Lines2
> \placetable[force][bla1]{bla}{\Table7}
> \Lines2
> \subsection{bla}
> \Lines7
> \placetable[force][bla2]{bla}{\Table{22}}
> \subsection{bla}
> \Lines2
> \placefigure[force][bla3]{}{\framed[height=2cm]{bla}}
> \subsubsection{bla}
> \Lines8
> \subsubsection{bla}
> \Lines2
> \subsubsection{bla}
> \Lines4
> \subsubsection{bla}
> \Lines2
> \section{bla}
> \Lines{15}
> \Lines2
> \section{bla}
> \Lines2
> \Table9
> \Lines2
> \stoptext
> 
> Cheers, Peter

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Otared Kavian
Département de Mathématiques
Université de Versailles Saint-Quentin
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