I noticed xterm/uxterm being extremly slow on startup and also on displaying the fonts menu when running under a zh_CN.UTF-8 locale. strace shows the culprit: 03.833720 writev(3, [{"1\1\4\0\1\0\7\0", 8}, {"*-GBK-0", 7}, {"\0", 1}], 3) = 16 <0.000032> 03.845074 writev(3, [{"1\1\5\0\1\0\t\0",...