I recently installed copies of AutoPano Pro and AutoPano Giga, which are some great panorama stitching programs that I would highly recommend, as they work on Linux, Mac, and Windows. After installing these programs, there was a horrible font problem that made all of the text in the application illegible.
The solution I believe was to install qt4-config, run qtconfig, change the font size up to 9, and then back down to the default of 8. When you launch the program again, all of the fonts and text should be fixed and legible. Have fun using this awesome program!