  We look at the possibility of non-perturbative particle production after
inflation from SUSY flat directions produced by rotating eigenstates thereby
avoiding the standard adiabaticity conditions. This might lead to preheating
and prevent the delay of thermalisation of the universe. We investigate the
flat directions $LLE^c$ and $U^cD^cD^c$ and find no particle production. These
2 directions are very important, since they have been named as possible
candidates for being the inflaton. We investigate $QLQLQLE^c$ and find particle
production and therefore the possibility of preheating. We investigate the
$LLE^c$ and $U^cD^cD^c$ directions appearing simultaneously, and find no
production. Finally, we investigate $LLE^c$ and $QLD^c$ simultaneously - with
one L-field in common. Here we do find particle production and therefore the
possibility of preheating. This means that if SUSY flat directions are to delay
thermalisation and thus explain the (lack of) gravitino production, it is
necessary to explain why complicated directions as $QLQLQLE^c$ are not exited,
and why combinations like $LLE^c$ and $QLD^c$ are not both exited.
