I need some help from the gurus here.

my satio had a very weird problem just now. the software keys, at the bottom of the screen, where you can assign 2 different shortcuts, are missing.

i tried to restart my phone, take out the battery, change theme, re-assign the shortcuts, but the shortcuts are still missing. the problem occurs when i was transferring my files from my phone to the pc, through 'mass storage'.

it's not a very big issue, but i'll like to get it sorted out. thanks