I'm getting to know the issues peeps have been having with their sites now. I think the reason it hadn't been affecting me yet is because lately I've been doing one, big edit to certain pages, but the issues with my site not updating occurs when I try to update the same file more than once (like when I go in to do small tweaks)
Yeah that adds up with my experiences. I also read your reply about an external editor, might give it a go, thanks for the suggestion!