Mailing the story:

Ext4 (the fourth extended file system) has been the gold standard for the Linux kernel ever since it was declared "stable" in October 2008. It was the direct descendant of ext3 (released November 2001) which introduced journaling to the previously unjournaled ext2 file system that has been with us since 1993. Ever since its release into the wild, ext4 has proven to be fast and reliable. I've installed it onto more computers than I can count, and never had any reason to complain about it...until recently. But a serious bug has crept into the ext4 stable release, causing data corruption on some computers running Linux kernels 3.4, 3.5, and 3.6.