You need to open a terminal window (click the Applications Menu
, up at the top there may be a Terminal Emulator
selection; if not, select System
-- you can also right-click on the display and then click Open Terminal Here
You'll get a window that you can type in. Enter
rm -r ~/.cache/sessions<enter>
exit<enter> <this closes the terminal window>
(the <enter> indicates: hit the Enter
key on your keyboard).
Log out and log back in. If that fixed it, you're good to go. If not, open a terminal window again and
rm -r ~/.cache<enter>
Log out and log back in again.
Hope this helps some.