I have tried this at the terminal:
To install screenlets type the following commands in terminal:-
$sudo add-apt-repository ppa:screenlets/ppa
$sudo apt-get update
$sudo apt-get install screenlets
If you want to enjoy some more screenlets, enter the following command in Terminal:-
$sudo apt-get install screenlets-pack-all
It ends with:
“Unable to locate package screenlets-pack-all”
Also, the ppa shows up as a source repository.
Hmmm…