Possible solution to this bug here:Slacko 5.3 main
Still having this problem.
Frugal install to USB flash drive
Save option - save to partition sdb1(the flash drive)
menu->shutdown->reboot or poweroff
Goes to saving session to sdb1 message
Then back to desktop.
Does not poweroff computer or reboot.
If you make a save file to flash drive. no problems.
This only happens if you use save option save to sdb1 (the flash drive)
http://www.murga-linux.com/puppy/viewtopic.php?t=73225