It is odd because Maemo auto-mounts it, and then it gets mounted into the chroot, and so there's this weird, infinite-mirror thing going on, where /media/mmc1/media/mmc1/media/mmc1/....etc is a valid directory. A crawler like maemo's metalayer-crawler would wander off into the infinite distance trying to index everything over and over again, slowing down your system...

I strongly suggest using qtparted to shrink your partition "to the right" and add a small partition at the beginning of the card.