Package: libc6 Version: 2.1.2-11 When i run date when my locale is ru_RU.KOI8-R (LANG=ru_RU.KOI8-R), it shows me name of the month and day like it was C locale. Before upgrade, everything was OK. When i run xterm, it says that my locale is not supported, and it will use C locale.
When i regenerated locale (localedef -i KOI8-R -f ru_RU ru_RU.KOI8-R) using new localedef from new libc6-bin package and new charmaps and locale sources from i18ndata everything was OK. I tried to find out what's a problem, and found out that old locale (from 2.1.2-11 locale package) and generated locale differ. It seems that locale format have changed, but locale from locales package was generated with old localedef. (or new localedef and old libc)
