12.04 software center stuck at applying changes

[mads2106]

Hi.
I have recently upgraded to 12.04, and its all jolly nice, but when I installed dropbox it had a few problems, but it started working with a few tries.
Now my software center is jammed because of a process called "Searching" underneath "applying changes"
When I try to cancel it, it just says "canceling" underneath instead, but the bar doesn't move, and it has sat like that for an hour now.
I have tried force quitting the program, restarting my computer etc. but nothing has changed.
I found some other people with similar problems, and some suggestions were to use "sudo dpkg --configure -a", but then it just tells me that: "dpkg: error: dpkg status database is locked by another process"
I have tried restarting my computer without opening the software center, and retrying the command, but same story there.
Another suggestion was to go to update manager and reset it, but I can't even open it properly.
It says following: "It is impossible to install or remove any software. Please use the package manager "Synaptic" or run "sudo apt-get install -f" in a terminal to fix this issue at first."
I have then tried the last command, but no luck.
Largely similar response as to the first command i tried.
I have then tried to uninstall dropbox, but as the software center will only do one process at a time, and it is currently stuck... well you guessed it.
Do any of you know how to force it to stop the nonsense and cancel that stupid process for good?
Thanks in advance.

Update:
The issue somehow solved it self over the night. I have no idea what happened, but there is no process running in the software center now.

[prats226]

From the command prompt:
ps -e
now check the process id (XXXX) for process nautilus-drop
sudo kill XXXX
Again check if there is any process with same name

Worked for me

[Rowley1721]

From the command prompt:
ps -e
now check the process id (XXXX) for process nautilus-drop
sudo kill XXXX
Again check if there is any process with same name

Worked for me

Cheers dude, worked for me too. Dropbox was stuck being removed from Ubuntu software centre AND stuck at 99% from Synaptic lol, solved both problems in one.

I had 6 codes to "Kill" and it was all good

[saky]

Hi guys. There is no process nautical-drop. What should I do? This is really irritating as I need to install other software which is not working because of this.

[CharlesA]

Hi guys. There is no process nautical-drop. What should I do? This is really irritating as I need to install other software which is not working because of this.

What happens if you run this from the terminal:

sudo apt-get upgrade

[saky]

Hi guys. There is no process nautical-drop. What should I do? This is really irritating as I need to install other software which is not working because of this.

However, there is a process nautilus.

[CharlesA]

However, there is a process nautilus.

nautilus is the file manager.

[saky]

What happens if you run this from the terminal:

sudo apt-get upgrade

As far as I know, it checks for updates and opens Update manager.

[saky]

So what should I do? Please help out.

[saky]

Reading package lists... Done
Building dependency tree       
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue [Y/n]? y
Setting up firmware-b43-installer (1:015-9) ...
No chroot environment found. Starting normal installation
This card work with newer 5.10.56.27.3 firmware. Trying to install it.
--2012-08-13 23:11:59--  http://mirror2.openwrt.org/sources/b...mipsel.tar.bz2
Resolving mirror2.openwrt.org (mirror2.openwrt.org)... 1.0.0.0
Connecting to mirror2.openwrt.org (mirror2.openwrt.org)|1.0.0.0|:80... Reading package lists... Done
Building dependency tree       
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue [Y/n]? y
Setting up firmware-b43-installer (1:015-9) ...
No chroot environment found. Starting normal installation
This card work with newer 5.10.56.27.3 firmware. Trying to install it.
--2012-08-13 23:11:59--  http://mirror2.openwrt.org/sources/b...mipsel.tar.bz2
Resolving mirror2.openwrt.org (mirror2.openwrt.org)... 1.0.0.0
Connecting to mirror2.openwrt.org (mirror2.openwrt.org)|1.0.0.0|:80...