I’ve had this problem too. I keep getting the letter “s” being added to the last line of the htaccess file causing the site to crash. I can’t seem to find a solution other than to change the file permissions. My theme developer said it’s not them (Modernize – Goodlayers), my dedicated virtual host (MediaTemple) says it’s not them, and so far all the plugin authors say the same. I’ve tried re installing WP, but the problem persists. Let me know Trueimage if you figure it out and I will do the same!
