Turning off sending data to productsearch.ubuntu.com
Entering a search term into the dash causes the keystrokes to be sent to productsearch.ubuntu.com and «selected third parties».
This can be turned of using the privacy panel (System Settings -> Security Settings -> Security & Privacy -> Search) and toggling off include online search results.
This is also a good occasion to turn off Send error reports to Canonical and Send occasional system information to Canonical in the Diagnostics tab, right to