Ugly fonts
This week seems like ugly fonts week.
First, KDE4 was uploaded to unstable. Now I'm not a KDE user, but I do cherry-pick a few KDE applications which I find useful or interesting, and use them in my IceWM environment; these are mainly korganizer (with konsolekalendar in my .bashrc), kdebluetooth, and digikam.
First thing I noticed is that something went horribly bad with the fonts -- see this screenshot for an example of what the problem is; the korganizer window in the background has ugly artifacts, while the kbluetooth menu in the foreground is still a KDE3 window which does what I was expecting.
Second, someone thought it good to add console-setup as a dependency of Xorg 7.4. Now by itself, there's nothing wrong with that, except for the fact that console-setup by default changes the console font to something else. I had, in fact, tried out this setup a while back, but eventually (after a few weeks), decided that I did not like this font, because it's a) ugly and b) unreadable on a high-resolution 12" display.
So I changed /etc/default/console-setup to get the VGA font back, ran the console-setup initscript, and all was well.
Until my laptop was resumed from suspend-to-RAM. Apparently the console font is changed at that point in time, too, with some other configuration, and I'm not sure how to fix it.
Oh well.
I seem to remember hearing somewhere that qt3 ignores fontconfig (and essentially reinvents the wheel of font configuration), while qt4 pays attention to it. This could explain why you're now getting different fonts.
Have fun fixing the XML files that fontconfig uses.