microUgly wrote:

It could be an issue with my ISP, but when I try to submit a file it says "upload in progress" then dies--FF gives back a blank page whilst Opera says "You tried to access the address http://openclipart.org/media/submit/clipart, which is currently unavailable".

Why don't you ask about this on the openclipart.org mailing list? http://lists.freedesktop.org/mailman/listinfo/clipart

I suspect there is something about your file or how your file is parsed by the ccHost upload script... in some cases saving as plain SVG helped.