I want to use tikz/pgf to plot some graphs in a poster done with a0poster. That is the code:
\begin{tikzpicture}
\begin{axis}[xlabel=lambda, ylabel=int]
\addplot[blue] table [mark=none, col sep=comma, trim cells=true]{data.txt};
\end{axis}
\end{tikzpicture}
Here's what it should look like, compiled in DIN-A4 (standard paper size):

This is what happens with a0poster (never mind about the background):

Apart from the screwed up labeling and positioning (which might be fixed), there are curves in all the wrong places. The frame has 3 curvy corners and the single data points are connected by way too big arcs. That's what makes the hairs, here is it in detail:

Well, do you have an idea of how to make pgfplot work correctly with a0poster?
(Or, if not, which poster packages are compatible with pgfplot? It would hurt to port the finished poster layout to another package, but if there's no other solution, then that's the pill to swallow.)
!in front of it to turn it into a link. A moderator or another user with edit privileges can then reinsert the!to turn it into an image again. You apparently deleted the URL lines at the end, which makes the link entries useless. – Martin Scharrer Oct 15 '11 at 18:46def\pgfsysdriver{pgfsys-dvips.def}before loading tikz – Christian Feuersänger Oct 15 '11 at 19:44