Run the following command:
killall unity-panel-service

The entire unity bar will be restarted

For  T-Mobile / tmobile users:

As of 10/11/2014 Ubuntu Touch RTM 14.09 still loads ipv6 by default.  T-mobile is using ipv4

Go to to the terminal application in Ubuntu Touch
Enter your password if needed
Enter the following:

cd /usr/share/ofono/scripts/
./deactivate-context
./set-context-property 0 Protocol ip
./activate-context

check your ip with:
ifconig

By: Mike

Problem:

apt-get -f install
Reading package lists… Done
Building dependency tree
Reading state information… Done
Correcting dependencies… Done
The following extra packages will be installed:
libnfc5
The following NEW packages will be installed:
libnfc5
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
5 not fully installed or removed.
Need to get 77.2 kB of archives.
After this operation, 213 kB of additional disk space will be used.
Do you want to continue [Y/n]? y
Get:1 http://http.kali.org/kali/ kali/main libnfc5 i386 1.7.0-3kali1 [77.2 kB]
Fetched 77.2 kB in 0s (141 kB/s)
(Reading database … 289995 files and directories currently installed.)
Unpacking libnfc5:i386 (from …/libnfc5_1.7.0-3kali1_i386.deb) …
dpkg: error processing /var/cache/apt/archives/libnfc5_1.7.0-3kali1_i386.deb (–unpack):
trying to overwrite ‘/lib/udev/rules.d/42-pn53x.rules’, which is also in package libnfc3 1.6.0~svn1469-2kali1
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Errors were encountered while processing:
/var/cache/apt/archives/libnfc5_1.7.0-3kali1_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

Solution:

dpkg -i –force-overwrite /var/cache/apt/archives/libnfc5_1.7.0-3kali1_i386.deb

apt-get -f install

Thank you D. Lartey for posting a similar solution which helped me resolve this one.

Be careful executing  the following command.
Make certain you are in the directory that you want to be in and that you are deleting the appropriate files.

find . -type f -mtime +7 -delete

1. Install perf:

   sudo apt-get install linux-tools-common linux-tools-generic linux-tools-3.13.0-35-generic

   (The second package must match your kernel version. (Find with: uname -a) You can also just first install linux-tools-common and linux-tools-generic

   then type “perf" to let it tell you which package it needs.)

2. Record some 10 seconds of backtraces on all your CPUs:

   sudo perf record -g -a sleep 10
   

3. Analyse your recording:

   perf report
   
   

By: Tanius and Nighthawk