[pstricks] Non breakable space (~) with PSTricks

[Jorge Ramos]

I have noticed that when the PSTricks package is summoned in the
preamble, the tilde character (~) ceases to work in my documents, e.g.

\usepackage{pstricks}
\begin{document}
... see page~3... %@ line x
\end{document}

yap should print a non-breakable space :

yap->
%%%%%%%%%%%%%%%%%%
...
... se page 3 ...
...
%%%%%%%%%%%%%%%%%

but ~ ceases to work:

yap->
%%%%%%%%%%%%%%%%
... se page
3...
%%%%%%%%%%%%%%%%

can someone help me out?

thanks,

Jorge.