DOCBOOK: Big complex files cause problems?

Hi,

I am still having problems with db2pdf in that jadetex is crapping out with
an out of memory error:


Tex capacity exceeded, sorry  [main memory size=263001]

Even though I have increased that field in /usr/share/texmf/web2c/texmf.cnf



Regards
-------
Richard Sharpe, 
Samba (Team member, www.samba.org), Ethereal (Team member, www.zing.org)
Contributing author, SAMS Teach Yourself Samba in 24 Hours
Author, Special Edition, Using Samba