style.css keeps resetting itself

Hello.

I have a problem with your theme. Periodically, about every 4 or 5 hours, every change I’ve made to the theme’s style.css disappear. It’s like the file is resetting itself! 🙁

I’ve even tried a temporary fix by removing all write permission for that file, but to no avail. The user write permission is reset to on and sure enough, style.css is back to its default value.

I’d be grateful for a solution because I’m very fond of the theme and would like to keep using it.

Thanks,
Xavier