Package: linux-2.6 Version: 2.6.31-1~experimental.2 Martin Michlmayr backported the CESA patches from 2.6.32 to 2.6.31 but didn't enable them as module even though changelog indicates that * [armel/orion5x] Enable CRYPTO_DEV_MV_CESA. This is from the used config: obstschale:/boot# cat config-2.6.31-trunk-kirkwood | grep CESA # CONFIG_CRYPTO_DEV_MV_CESA is not set obstschale:/boot# uname -r 2.6.31-trunk-kirkwood Please enable, Thanks