Consider the trivial test file:

  -------------------------------------
% example from: <http://wiki.contextgarden.net/Bibliography>
% Format using:
%   $ texexec --once t-cont
%   $ bibtex t-cont
%   $ texexec t-cont
\usemodule[bib]
\usemodule[bibltx]
\setupbibtex[database=xampl]
\starttext
As \cite[article-full] already indicated, bibtex is a \LaTeX-centric
program.
\completepublications
\stoptext
   -------------------------------------

Following instructions:
   -------------------------------------
> texexec --once bibdemo
TeXExec | processing document 'bibdemo'
TeXExec | no ctx file found
TeXExec | tex processing method: context
TeXExec | writing option file bibdemo.top
TeXExec | using randomseed 595
TeXExec | tex engine: pdftex
TeXExec | tex format: cont-en
This is pdfTeX, Version 3.141592-1.40.7 (MiKTeX 2.7)
entering extended mode
(bibdemo.tex

ConTeXt  ver: 2008.01.28 21:28 MKII  fmt: 2008.2.18  int: english/english
[....]

Output written on bibdemo.pdf (2 pages, 42919 bytes).
Transcript written on bibdemo.log.

pdftex: Virtual memory exhausted while trying to reserve 8 bytes for table
???.
TeXExec | runtime: 2.828
  -------------------------------------------

I don't see this on my linux machines with older versions of ConTeXt and
pdftex.
Simple LaTeX documents and ConTeXt documents that don't use the bib module
don't give the error, so it looks like the bib module reveals a bug in
pdftex-1.40.n,
for some n larger than 3.


-- 
George N. White III <aa056@chebucto.ns.ca>
Head of St. Margarets Bay, Nova Scotia