  We study the field theories for pinned elastic systems at equilibrium and at
depinning. Their $\beta$-functions differ to two loops by novel ``anomalous''
terms. At equilibrium we find a roughness $\zeta=0.20829804 \epsilon + 0.006858
\epsilon^2$ (random bond), $\zeta=\epsilon/3$ (random field). At depinning we
prove two-loop renormalizability and that random field attracts shorter range
disorder. We find $\zeta=\frac{\epsilon}{3}(1 + 0.14331 \epsilon)$,
$\epsilon=4-d$, in violation of the conjecture $\zeta=\epsilon/3$, solving the
discrepancy with simulations. For long range elasticity
$\zeta=\frac{\epsilon}{3}(1 + 0.39735 \epsilon)$, $\epsilon=2-d$, much closer
to the experimental value ($\approx 0.5$ both for liquid helium contact line
depinning and slow crack fronts) than the standard prediction 1/3.
