Baffling error

["Paulo Ney de Souza" <desouza@Math.Berkeley.EDU>]

I have a very simple file, with some 20 pages only and a few pictures,
nothing extr5enuous, but when I include the following piece of code
anywhere, it gives me TeX capacity exceeded, when producing a PDF file, that
is, with "texexec --pdf book.tex" but NO error when producing a DVI file ...

Can anyone shed some light onto it ? The piece of code is:

\startitemize
\item {\bf Low-strength concrete}: less than 20 MPa (3000 psi)
\item {\bf Moderate-strength concrete}: 20 to 40 MPa (3000 to 6000 psi)
\item {\bf High-strength concrete}: more than 40 MPa (6000 psi).
\stopitemize

The file can be found in:

	http;//math.berkeley.edu/~desouza/Context/

Paulo Ney