Do you have an HP printer or scanner?
I had a friend having the same issues last evening. I used the following steps to resolve their issue.
From: http://support.microsoft.com/kb/918165
RESOLUTION
Share-to-Web software
Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall your operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.
Security update 908531 includes an "allow list." The Verclsid.exe program does not scan any file that has an extension that appears in this list. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
908531 (http://support.microsoft.com/kb/908531/) MS06-015: Vulnerability in Windows Explorer could lead to remote code execution
To solve this problem, you can add the HP shell extension to the list. To you do this, you must follow these steps to modify the registry:
1. Log on to the computer by using an account that has administrative credentials.
2. Click Start, click Run, type regedit, and then click OK.
3. Locate and then right-click the following registry subkey:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached
4. Point to New, and then click DWORD Value.
5. For Microsoft Windows 2000-based computers, type the following:
{A4DF5659-0801-4A60-9607-1C48695EFDA9} {000214E6-0000-0000-C000-000000000046}
For Microsoft Windows XP-based or Microsoft Windows Server 2003-based computers, type the following:
{A4DF5659-0801-4A60-9607-1C48695EFDA9} {000214E6-0000-0000-C000-000000000046} 0x401
6. Right-click the value that you just created, and then set the Value data to 1.
7. Exit Registry Editor.
8. Use Task Manager to close the Verclsid.exe program or to restart the computer.
