@colin.stephane - please copy the attached patch to debian/patches and add it to series file. it fixes leafpad "Save As" crash.

Anyway the root of the problem is still unknown. I suspect hildonfm or similar, someone is traversing all the filesystem, executing FAT_IOCTL_GET_ATTRIBUTES to all the files. It seems this has been reported several times (here for example) but noone has find the root cause.

The attached patch will solve kernel crash but reboot will happen if you have watchdog disabled. In case watchdog is disabled you will have a reboot 30 seconds after "Save As" is pressed, because wd file is opened and then closed.

When I have time I will find what is the root cause of the problem.