Template issues

I'm finding some odd intermittent problems with the main page template: if I edit it online, it accepts the change I make, but then seems to randomly delete strings of text from the file when saving it. Sometimes it's just a link that breaks, but other times (like this morning), significant chunks of markup get bollixed.

I've asked Jon to upload the template directly, rather than through the web interface. I hope that fixes the worst of the issues.