Is it just me or does anyone lse find if they go to the fron page it's been replaced by person(s) unknown with a cartoon and the message "Defaced by......"

Dang... looks like we got hacked...
Thank goodness it was only a defacement - no permanent damage done...
I'll report it to the webhost...
My site used to get hacked every 2-3 weeks at one point, then I put up an extra encryption layer between the sql database and the public.
MY frontpage was always defaced, and always by SQL injection.