Moved from: bobsql.com
These are distinct errors but I have found that many people blend them together. It really takes an entire chapter to explain these conditions so I am going try to do it in a page or two?
Unresolved Deadlock
An unresolved deadlock is generally a SQL Server product issue. When an unresolved deadlock is detected a message is added to the SQL Server error log and a mini-dump is captured.
The Lock Monitor is responsible for detecting and resolving deadlocks for SQL Server. It does this by building a lock graph (you may have