And this is why I wait before switching fs types. I waited almost 2 years after ext3 was considered stable, before I switched from ext2. I just rebuilt my machine 2 days ago, and I almost, almost went with ext4. But that little voice of caution(read, paranoid subconcious :P) told me to hold off, then someone points out this thread to me.
With that said, after reading the posts in the mailing lists, I am once again proud of the kernel developers and the hardcore linux geeks, for so quickly jumping on this problem, as well as the calm of the "victims". If a similar problem occurred in windows, hoo-boy, there would be an uprising.