search for: 12x24

I'm having an odd problem which I can't seem to find the answer to. I have recently upgraded from CentOS 5 to CentOS 6 (using a fresh install and migrate). However, I have a bunch of Tk widgets that use font names like "12x24" and "5x7", etc. Under CentOS 5 (Tk 8.4), this worked fine; however, under CentOS 6 (Tk 8.5), this does not seem to work properly; it does not find the fonts and reverts to a (pretty, but wrong) default font. I have verified using xlsfonts, xdpyfont, etc. that the fonts exist; for...