1. defect in my mmc ?

formated 1 GB Kingston mmc mobile using mke2fs /dev/mmcblk0p2, very slow after 27 blocks when writing inode tables (61 blocks in total). Repeated couple times and tried with mkfs.ext3, same thing happened.

when the format was done, no problem was found with e2fsck -f /dev/mmcblk0p2

2. reboot during OS cloning

when the OS was cloned using: ./tar cf - -C /floppy . | ./tar xvf - -C /opt, it run very fast and then significantly slow down and then copy speed varied but finally the tablet rebooted itself. Tried several times with ext2 or ext3 but all failed. GNU tar was used and virtual memory was set to 64 MB.

Thanks for your time!