False Positive in my website

Gentlemen,

avast is blocking the site hxxp://www.hostgold.com.br being that there maliciso any file on the server. It’s a system bug or need to do some procedure to solve this problem?

what does avast say?

can you attach a screenshot?

follows the below error

http://img11.imageshack.us/img11/7083/urlmaliciosa.png

you can report false positive here

http://www.avast.com/contact-form.php?

tks for u help