Hello, Just to let you know that this is now available here http://fanoush.wz.cz/maemo/#sdhc I have not tested SD cards personally but at least one person tested it with Sandisk 4GB micro SDHC card and it seems to work (see forum thread already linked). It may or may not improve also stability with some MMC cards so it may be worth of trying if you previously tested my older high speed MMC kernels without success. And now you can also get kernel with your preferred MMC bus frequency limit :-) Frantisek