Ubuntu tweak stopped working
I have a computer running 8.04.4. After a large number of updates, I can no longer run ubuntu-tweak correctly. The program states "This feature is only available in Gnome Desktop Environment" on most of the items.
I am POSITIVE that I am running the Gnome desktop.
Also, when I reload the repositories I receive the following error:
Are these two things tied to each other possibly?
W: GPG error: http://ppa.launchpad.net hardy Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY (then a hexadecimal number)
Thank you for any input.
Laptop - Acer 5560-7414,AMD A6-3420M 2.4 GHTz, 8GB DDR, 500GB WD Scorpio, AMD Radeon HD 6520, 16.04 64bit
Work - Asus M4A785TD-V EVO, AMD Phenom(tm) II X4 955, 16GB DDR3, WD1500HLFS 14.04 64bit