If you've been noticing corruption on pages of blogs hosted by Blogspot then you're not alone. It is a result of Mozilla's (Firefox and suite) interaction with the Blogspot servers, and it is being
worked on as we speak. Seems it's compression related (hence the weird characters):
So when Mozilla first requests the page, it gets a response 200 ok, with gzip-encoded content. When it then re-requests it with a range, it gets 206 partial content (which is fine so far), but this is no longer gzip-encoded.