I am preparing slides for pdflatex and beamer (on Linux/Ubuntu/Karmic) on my MELT. So I need to show both C code fragments and Lisp-like cod fragments. I am using the alltt package (I don't want to change that to e.g. listings, because I have many examples in an LLNCS paper submission), and I want to show in different colors C code and Lisp code.
And my issue is that while the color is indeed set, the alltt does not seems to work anymore: a newline in the source is not translated into a newline in the slides.