Above titled event is logging after every 5 minute interval on my Windows SBS 2008 Server.
I have tried many troubleshooting trick but none of them worked.
Event Details are following:
Log Name: Application
Source: Windows SharePoint Services 3 Search
Date: 3/04/2013 6:30:37 AM
Event ID: 2424
Task Category: Gatherer
The update cannot be started because the content sources cannot be accessed. Fix the errors and try the update again.
Context: Application 'Search', Catalog 'index file on the search server Search'