Malicious Site

When I wanted to get further information about a blocked site (a legitimate site blocked by Firefox), I found this ([i]here: http://safebrowsing.clients.google.com/safebrowsing/diagnostic?client=Firefox&hl=hu&site=http://pcworld.hu/[/i]):
hxxp://personallybuild.co.cc/
I wrote it into Google, but no reacts from avast!
There were two another sites, and avast! alerted when I wrote them into Google. They were:
hxxp://lebistes.com/
hxxp://systemtotallytree.co.cc/
So the undetected one is the first.

Sorry for my not very well English.

The undetected link ( hxxp://personallybuild.co.cc/ ) is dead http://downforeveryoneorjustme.com/http://personallybuild.co.cc/

VirusTotal - URLscan
http://www.virustotal.com/url-scan/report.html?id=acb4a1efef10820af36e1a87d6a3b895-1287862290