  In this short note we provide explicit examples in characteristic $p$ on
certain smooth projective curves where for a given semistable vector bundle
$\mathcal{E}$ the length of the Harder-Narasimhan filtration of $F^\ast
\mathcal{E}$ is longer than $p$. This answers a question of Mehta and Pauly
raised in arXiv:math/0607565.
