Idea for module: don't give an actual error message, file, or line number, but just a hint.
Something's wrong in one of the DBD modules, around line 100.
The module might itself use Carp.pm to do some of the work, and should have optional levels of vagueness.
I don't have time to do this module, which may also be better suited for Acme::. Give me credit if you decide to do it.
If you have to ask Why?, then this module is probably not for you, but just in case you care: sometimes it is more fun to figure out what the problem is than be told exactly what and where.
Or, it could be used as a practical joke on someone, just by changing use Carp to use Carp::Hint.