As I understand this fix has been out for a long while but I thought I would post it, even if just for my own reference. If you have been experiencing frequent errors in the eventlog looking similar to the below:
Event Type: Error
Event Source: Windows SharePoint Services 3
Event Category: (964)
Event ID: 6398
PM User: N/A
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.
Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Then you probably need the hotfix, head to http://support.microsoft.com/?id=946517 and click ‘View and Request Hotfix Downloads’ to download this hotfix.