cannot install programs using apt-get

[karthick87]

Getting error while using apt-get

karthick@Ubuntu-desktop:~$ sudo aptitude install aquadreams-theme
E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable)
E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Reading extended state information      
Initializing package states... Done
E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable)
E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?

What is the problem here..?How do i solve..?

[Bapun007]

This means another program is using root access . Ex - synaptic , software center . Close these programs and try .(works for me)

[kroq-gar78]

if no other programs are running and you think you closed all of them, just reboot the computer. It's the easiest way to kill everything that's running.

[karthick87]

This means another program is using root access . Ex - synaptic , software center . Close these programs and try .(works for me)

i think something is runing in background.How can i close that..?

[Gheter]

You can also try using aptitude instead of apt-get. This worked for me(most of the time).

[karthick87]

Oke but what is running in background..?How do i find it..?

[garvinrick4]

system monitor to process's tab.

[kroq-gar78]

as I said, reboot the computer and it will kill all processes, including the package program that seems to be running

[karthick87]

Rebooted my system,but still the problem is same..I think thunderbird profile messed up.But i dont know to correct it..

[zuerston]

Rebooted my system,but still the problem is same..I think Thunderbird profile messed up.But i dont know to correct it..

If you have rebooted and not started Thunderbird again ,then it is not Thunderbird doing it. as stated above ,,see system monitor ==> processes for your answer.