Please 'modify' your post
change the URL from http to hXXp or www to wXw, to break the link and avoid accidental exposure to suspect sites, thanks.
http://sitecheck.sucuri.net/results/www.martid-2006.com/ - clear
http://urlquery.net/report.php?id=1408895 - clear, but it appears there may be more than one domain on that IP hosting address. So your site may be blocked by IP address rather than domain name. As the site is new, it could possibly be inheriting a block on the IP from previous domains hosted on it.
It is the Network Shield that is blocking it, see image.
There is an on-line contact form,
http://www.avast.com/contact-form.php?loadStyles for: * Sales inquiries; Technical issues; Website issues; Report false virus alert in file; Report false virus alert on website; Undetected Malware; Press (Media), issues.
- If you are reporting an FP, then you get another input field open, enter the web URL for the site you wish to submit for review (Network Shield), etc. A link to this topic also wouldn't hurt.