Yes, I can switch the behaviour on and of by installing or uninstalling
ttf-indic-fonts-core_1%3a0.5.4ubuntu2
So there seems to be a bug in these fonts and/or a bug in the handling of these fonts in either firefox or pango. I don't know any of these languages, so deinstalling it is a useful workaround for me.
LANG=de_DE.UTF-8
Graphics chipset is Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller rev 3, driver is intel
Yes, I can switch the behaviour on and of by installing or uninstalling fonts-core_ 1%3a0.5. 4ubuntu2
ttf-indic-
So there seems to be a bug in these fonts and/or a bug in the handling of these fonts in either firefox or pango. I don't know any of these languages, so deinstalling it is a useful workaround for me.
LANG=de_DE.UTF-8
Graphics chipset is Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller rev 3, driver is intel