If you are redirected to VirusBurst website, it's a symptom to begin to worry. Virus Burst is malicious software that is "advertised" with help of trojans. Once a trojan gets on a computer is can redirect to VirusBurst web site, change Internet Explorers home page and show fake "You are Infected" alerts. Remove virusburst as soon as possible.

Explanation why this security announcement is added to modeling site.