! TeX capacity exceeded, sorry [parameter stack size=6000].

Hello,

since yesterday I have a problem with tetex 2.0.2 and the parameter
stack size. The error message is produced at the end of
pdflatex'ing a latex-beamer presentation with about 30 pages.
The log file shows the following:

! TeX capacity exceeded, sorry [parameter stack size=6000].
\end #1->
  \csname end#1\endcsname \@checkend {#1}\expandafter \endgroup \if@e...
l.855   }

If you really absolutely need more capacity,
you can ask a wizard to enlarge me.


Here is how much of TeX's memory you used:
 7265 strings out of 95322
 125776 string characters out of 2438767
 352372 words of memory out of 1000001
 10109 multiletter control sequences out of 10000+50000
 16531 words of font info for 61 fonts, out of 500000 for 1000
 14 hyphenation exceptions out of 1000
 6005i,15n,6001p,227b,1109s stack positions out of
 15000i,500n,6000p,200000b,15000s
 1319 PDF objects out of 300000
 46 named destinations out of 131072
 1784 words of extra memory for PDF output out of 65536
!  ==> Fatal error occurred, the output PDF file is not finished!

I have already tried to change values in configuration
files which are located in /etc/texmf (according to
former messages about this problem). But this doesn't help.

What else can I do?

Thanks in advance,

Armin Herzer