unable to install thunderbird or kmplayer

[akrai]

i am new to ubuntu and i am having a problem installing new softwares
for eg. if i try to install thunderbird, i get the following error:


akrai@ubuntu:~$ sudo apt-get install thunderbird
[sudo] password for akrai:
Reading package lists... Done
Building dependency tree
Reading state information... Done
thunderbird is already the newest version.
The following packages were automatically installed and are no longer required:
linux-headers-2.6.27-7 linux-headers-2.6.27-7-generic
Use 'apt-get autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
1 not fully installed or removed.
After this operation, 0B of additional disk space will be used.
Setting up system-tools-backends (2.6.0-1ubuntu1.1) ...
* Starting System Tools Backends system-tools-backends invoke-rc.d: initscript system-tools-backends, action "start" failed.
dpkg: error processing system-tools-backends (--configure):
subprocess post-installation script returned error exit status 1
Errors were encountered while processing:
system-tools-backends
E: Sub-process /usr/bin/dpkg returned an error code (1)
akrai@ubuntu:~$


can anybody tell me whats happening?
will be thankful!!

[Partyboi2]

Looks like others have been having the same problem. See here (http://joeb454.ubuntuforums.org/showthread.php?t=976149)
Try reinstalling the package
Open a terminal (Applications>Accessories>Terminal) and

sudo apt-get --reinstall install system-tools-backends
If that does not work then try compete removal of the package as mentioned in Post #14 of the above link.

[gabore]

how to install kmplayer to ubuntu?

just type to the terminal:

sudo apt-get install kmplayer

It will download some files so make sure the internet connection is ready.