Gajim and LaTeX — How?

Dear lazy web, I've been using this feature IIRC in F10 and F11 but I cannot seem able to get it working with F12. I wonder what package(s) I'm missing... I have use_latex in gajim's settings activated and I have texlive-collection-latex-2009-2.17133.fc13.noarch, texlive-collection-latexextra-2009-2.17127.fc13.noarch, texlive-collection-latexrecommended-2009-2.17134.fc13.noarch as well as texlive-dvipng-2009-3.1.12.16044.fc13.noarch (which should AFAIK be more than equivalent to texlive-latex-base and dvipng mentioned in gajim itself) but still no luck. Maybe someone might guess what I'm still missing?