Keyboard shortcuts take a very long time to show effect.

[Harsh Vardhan]

It takes nearly ten to thirty seconds for the terminal to show up after I press, [ctrl] + [alt] + [T], or for that matter any other keyboard shortcut like [Print-Screen].
This isn't the case with toggle keys like caps-lock or num-lock or even super-key + <number>.

** This issue isn't reflected when the guest account is used. **

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: dbus 1.10.6-1ubuntu3.3
ProcVersionSignature: Ubuntu 4.8.0-52.55~16.04.1-generic 4.8.17
Uname: Linux 4.8.0-52-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.6
Architecture: amd64
CurrentDesktop: Unity
Date: Mon Jun 5 14:13:33 2017
InstallationDate: Installed on 2017-04-09 (56 days ago)
InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2)
JournalErrors:
 Error: command ['journalctl', '-b', '--priority=warning', '--lines=1000'] failed with exit code 1: Hint: You are currently not seeing messages from other users and the system.
       Users in the 'systemd-journal' group can see all messages. Pass -q to
       turn off this notice.
 No journal files were opened due to insufficient permissions.
SourcePackage: dbus
UpgradeStatus: No upgrade log present (probably fresh install)