anaconda creates, by default, /etc/sysconfig/i18n with the following contents: LANG="en_US.iso885915" SUPPORTED="en_US.iso885915:en_US:en" SYSFONT="lat0-sun16" SYSFONTACM="iso15" This causes major problems with X. The window manager I use (fluxbox) would not start (reporting errors about X not supporting the specified locale), applications reported failures loading default fonts, etc. It acted as if the locale en_US.iso885915 was bogus. After I edited /etc/sysconfig/i18n and changed all en_US.iso885915 to just en_US, everything worked correctly.
*** This bug has been marked as a duplicate of 62844 ***