Threat detected every 30 secs

Hey everyone, I just installed avast! and since I have received a threat detect-harmful URL message every 30 seconds or so. All of them have a process called “\.\globalroot\systemroot\svchost.exe” as the process but the object changes form one URL to another. Could this be a false alarm or is it working as intended? This install was just done after a fresh install of windows so I would hope hope I didn’t getting anything right of the bat. Any help info would be a huge help. thanks in advance.

Avast is preventing the underlying infection from getting worse:
This needs further analysis by a malware removal specialist:
Go to this topic http://forum.avast.com/index.php?topic=53253.0 for information on Logs to assist in cleaning malware. Use the information about getting and using the tools and attach the logs here, not in the LOGS topic.