sudo apt-get install indicator-ubuntuone
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package indicator-ubuntuone is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'indicator-ubuntuone' has no installation candidate
I even tried 'ubuntuone-indicator', but that also didn't work.