Event ID-6398,6482,7076 SharePoint Errors

I have been noticing these errors 6398, 6482 and 7076  in my production and test environments for quite some time occuring every other minute  in the application log.

The errors were:

Event Type: Error
Event Source: Windows SharePoint Services 3
Event Category: (964)
Event ID: 6398
Description:
The Execute method of job definition Microsoft.Office.Server.Administration.ApplicationServerAdministrationServiceJob
(ID 02b5e3f2-21e3-4552-bf1d-6e152749458a) threw an exception. More information is included below.

Event Type: Error
Event Source: Office SharePoint Server
Event Category: Office Server Shared Services
Event ID: 6482
Date:  9/23/2009
Time:  11:06:45 AM
User:  N/A
Computer: MOSS Server
Description:
Application Server Administration job failed for service instance Microsoft.Office.Excel.Server.ExcelServerSharedWebServiceInstance (fa699417-4cc5-497b-a15f-4b139d8fc351).
Reason: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

 Techinal Support Details:
System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
   at System.DirectoryServices.Interop.UnsafeNativeMethods.IntADsOpenObject(String path, String userName, String password, Int32 flags, Guid& iid, Object& ppObject)
   at System.DirectoryServices.Interop.UnsafeNativeMethods.ADsOpenObject(String path, String userName, String password, Int32 flags, Guid& iid, Object& ppObject)
   at System.DirectoryServices.DirectoryEntry.Bind(Boolean throwIfFail)
   at System.DirectoryServices.DirectoryEntry.Bind()
   at System.DirectoryServices.DirectoryEntry.get_IsContainer()
   at System.DirectoryServices.DirectoryEntries.CheckIsContainer()
   at System.DirectoryServices.DirectoryEntries.Find(String name, String schemaClassName)
   at Microsoft.SharePoint.Metabase.MetabaseObjectCollection`1.Find(String name)
   at Microsoft.SharePoint.Metabase.MetabaseObjectCollection`1.get_Item(String name)
   at Microsoft.SharePoint.Administration.SPProvisioningAssistant.ProvisionIisApplicationPool(String name, ApplicationPoolIdentityType identityType, String userName, SecureString password, TimeSpan idleTimeout, TimeSpan periodicRestartTime)
   at Microsoft.SharePoint.Administration.SPMetabaseManager.ProvisionIisApplicationPool(String name, Int32 identityType, String userName, SecureString password, TimeSpan idleTimeout, TimeSpan periodicRestartTime)
   at Microsoft.Office.Server.Administration.SharedWebServiceInstance.Synchronize()
   at Microsoft.Office.Excel.Server.ExcelServerSharedWebServiceInstance.Synchronize()
   at Microsoft.Office.Server.Administration.ApplicationServerJob.ProvisionLocalSharedServiceInstances(Boolean isAdministrationServiceJob)

After a detailed analysis and research on the forums and the Microsoft blogs, I came across the kb artice:  http://support.microsoft.com/?id=946517

Also we did install a hot fix  since we had a open ticket for this issue with Microsoft. After applying the hot fix (supposed to be realted to IIS )we were able to fix the errors which occurred every otther minute in the application log.