Sharepoint - Memory Leaks

http://angler.wordpress.com/2011/06/20/detecting-memory-leaks-in-sharepoint-2010/

sharepoint - The page you selected contains a list that does not exist. It may have been deleted by another user.

Error

List does not exist.

The page you selected contains a list that does not exist.  It may have been deleted by another user.

1. If there is any change in the forms(New/Edit/Display) OR if we have tried to make customizations using SharePoint Designer or anything else
2. If yes,then check whether the list id is proper.
3. If not,then Update the listid with proper id

Sharepoint - Cannot connect to configuration database

1.Run services. msc
2.Check whether the sql server instance is running?
3.If not,start that
4.Check the site now.(issue resolved)


MSDN reference : http://support.microsoft.com/kb/823287