http://support.microsoft.com/?id=962928

To resolve this issue, follow these steps:

1. Stop the Office SharePoint Services Search service. To do this, follow these steps:
   1. Click Start, click Run, type cmd , and then click OK.
   2. At the command prompt, type net stop osearch, and then press ENTER.
   3. Type exit to exit the command prompt.
2. Download and install the IIS 6.0 Resource Kit Tools. To obtain the IIS 6.0 Resource Kit Tools, visit the following Microsoft Web site:
   http://www.microsoft.com/downloads/details.aspx?familyid=56FC92EE-A71A-4C73-B628-ADE629C89499 (http://www.microsoft.com/downloads/details.aspx?familyid=56FC92EE-A71A-4C73-B628-ADE629C89499)
3. On each server in the farm that has Office SharePoint 2007 installed, follow these steps:
   1. Click Start, click Run, type cmd , and then click OK.
   2. Navigate to the location of the IIS 6.0 Resource Kit Tools (default location is: C:\Program Files\IIS Resources\SelfSSL)
   3. At the command prompt, type selfssl /s:951338967 /v:1000, and then press ENTER.
      
      Notes
      • For 64 bit Server, 951338967 is the default ID of the Office Server Web Services certificate.
      • For 32 bit Server, 1720207907 is the default ID of the Office Server Web Services certificate. You can check the ID of Office Server Web Services from IIS.
      • 1000 is the number of days that the certification will be valid.
      • You need to execute the selfssl command on each MOSS Server in the farm which is running a "Office Server Web Services" site.
      • SharePoint partly uses SSL name resolution in the background between farm servers, which users generally do not need to be aware of.
4. Start the Office SharePoint Services Search service. To do this, follow these steps:
   1. At the command prompt, type net start osearch, and then press ENTER.
   2. Type exit to exit the command prompt.
5. Download and install the following update to the .NET Framework 3.5 SP1. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
   959209  (http://support.microsoft.com/kb/959209/ ) An update for the .NET Framework 3.5 Service Pack 1 is available