For months I've been convinced that my 'blog software was corrupting some of my entries, and that I'd need to wait for a new release to solve the problem.
Well I've identified the real problem - located between my chair and my keyboard.
It was all my fault. My program that I wrote to display the log entries had a malformed expression, that, given the proper characters, could completely mangle the offending sentence.
I've fixed it now, but there's no telling what other bugs still lurk.