Garvin,

Thanks for the very prompt response.

Unfortunately, putting that line into that file doesn't work. While waiting for my host to deal with this, I started looking through the code and found that in include/compat.inc.php, there's a section labeled with the following comment:

/*
* Avoid ...

I don't know if this qualifies as a bug. It appears that my host has recently done a massive update, perhaps including changing the PHP version (it's now 4.4.7). The result of this for me has been that when I edit or create a post, slashes are inserted before every apostrophe, quote, and slash. Thus ...