Ghosts That Linger was created in 2009.
Linger - album - was created in 1990.
No question that there are good and bad ghosts, and I usually like to believe that ghosts don't mean to cause harm to us. But here's my answer to your question. Ghosts linger in homes and houses mainly because they were killed, so they had to stay behind and linger, waiting to be set free, or to be avenged. They can't rest peacefully until then.
Shadows Linger was created in 1984-10.
Linger in Shadows was created on 2008-10-09.
The First Pain to Linger was created in 1996.
Linger Lane was created on 1975-01-16.
Linger Ficken' Good was created in 1993-09.
The Ghosts was created in 1969.
As If by Ghosts was created in 2004-08.
Ghosts of Devotion was created in 2007.
A Congregation of Ghosts was created in 2009.
Skinner's Ghosts was created in 1998.