I have installed Lubuntu 12.04 64bit version on my USB flash drive with Universal-USB-Installer including persistent file option. This always worked perfectly with other versions of linux.

But it seems that Lubuntu 12.04 is not working with persistent file because after every boot from USB flash drive, the changes made to the system are not present and the system is fresh clean.

Can anybody help me figure out how can I force Lubuntu to use persistent file with LiveUSB ? Thanks for any help in advance.