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I have an old application that is compiled with gtk and glib version 1.2.10. I cannot change this. I've been running it on Ubuntu 12.04.2 LTS for a few months now without any real issues. The other day I noticed that the GUI had gotten screwed up.

The original look:

enter image description here

The way it looks now:

enter image description here

When I try to open one of the monitoring windows I get this output:

REG_FONT (-adobe-courier-bold-r-normal---120---m-*-iso8859-1) was not found. Using default font. LARGE_FONT (-adobe-courier-bold-r-normal---180---m-*-iso8859-1) was not found. Using default font. PLOT_FONT (-adobe-courier-medium-r-normal---120---m-*-iso8859-1) was not found. Sampling display values will be disabled. Check README file for more info.

I'm not certain what any of that means, other than it's looking for a font that it can't find. Whether the font was removed, a default was changed, or something else happened, I don't know. I didn't do anything intentionally.

I haven't changed anything in the glib/gtk directories in at least a year, so I don't think it was anything I have done directly. I haven't played with any system settings either. I do regular updates, but that's about it.

I have seen this issue on Centos 6 machines as well, so I'm not certain that it is a Ubuntu specific issue.

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And, What application is this one? –  Lucio Feb 4 '13 at 16:14
    
It's a 15 year old flight simulator program... It's for work, thus my inability to change/upgrade the GTK library used. I think my problem is some update that I did in the last 7-10 days, but I wouldn't bet money on it. –  pennyrave Feb 4 '13 at 17:59
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