Deviantart.com not working

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I wonder if the issues you're seeing are related to DNS. When I went to that site with my proxy there was quite a few name resolution timeouts that led to some really screwy pages without the missing parts. Some of the zone resolutions that timed out include:
st.deviantart.com th05.deviantart.com fc13.deviantart.com th08.deviantart.com th00.deviantart.com

Refreshing the pages often worked much better since most of its host names were then cached.

Of course, the problem may instead be the filters as you stated.