On opening eM, it went through a database check and reported:
System.Data.SQLite.SQLiteException (0x80004005): database is locked
database is locked
at System.Data.SQLite.SQLite3.Step(SQLiteStatement stmt)
at System.Data.SQLite.SQLiteDataReader.NextResult()
at System.Data.SQLite.SQLiteDataReader…ctor(SQLiteCommand cmd, CommandBehavior behave)
at System.Data.SQLite.SQLiteCommand.ExecuteReader(CommandBehavior behavior)
at System.Data.SQLite.SQLiteCommand.ExecuteNonQuery()
at MailClient.Storage.Data.DataStore.GetConnection(String relativeName)
at DbRepair.CorruptionChecker.CheckCorruption()
at DbRepair.FormCheck.Check(Object state)
Its done this a couple of times previously