  We have found the solution to the back reaction of putting a stack of
coincident D3 and D5 branes in $R^{3,1}\times M_6$, where $M_6$ is constructed
from an infinite class of Sasaki-Einstein spaces, $L^{(p,q,r)}$. The non-zero
fluxes associated to 2-form potential suggests the presence of a
non-contractible 2-cycle in this geometry. The radial part of the warp factor
has the usual form and possess the cascading feature. We argue that generically
the duals of these SE spaces will have irrational central charges.
