  This Letter initiates the study of what we call non-chiral staggered Virasoro
modules, indecomposable modules on which two copies of the Virasoro algebra act
with the two zero-modes acting non-semisimply. This is motivated by the
"puzzle" recently reported in arXiv:1110.1327 [math-ph] involving a
non-standard measured value, meaning that the value is not familiar from chiral
studies, for the "b-parameter" (logarithmic coupling) of a c=0 bulk conformal
field theory. Here, an explanation is proposed by introducing a natural family
of bulk modules and showing that the only consistent, non-standard logarithmic
coupling that is distinguished through structure is that which was measured.
This observation is shown to persist for general central charges and a
conjecture is made for the values of certain non-chiral logarithmic couplings.
