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I'm trying to download the MATLAB program through the software center on Ubuntu 12.04. The installation has stalled half way through (in the applying changes phase), but I can't cancel it. I've tried restarting the computer, but the download still shows and I can't remove it. It also prevents me from downloading any other programs on software center. What can I do to remove the item from my software center download list?


I tried the solutions posted here and I get another error:

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
debconf: DbDriver "config": /var/cache/debconf/config.dat is locked by another process: Resource temporarily unavailable
Setting up man-db (2.6.1-2ubuntu1) ...
debconf: DbDriver "config": /var/cache/debconf/config.dat is locked by another process: Resource temporarily unavailable
dpkg: error processing man-db (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
E: Sub-process /usr/bin/dpkg returned an error code (1)
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possible duplicate of What does this red icon on my panel mean? –  Anwar Shah Jan 19 '13 at 16:47
@Anwar: This is not a duplicate, because I am not facing the problem of a red icon on my panel. There is no such red icon anywhere on my screen. –  Paul Jan 19 '13 at 16:54
Have you tried the solution? I think, your problem is same, but I may be wrong. –  Anwar Shah Jan 19 '13 at 16:58
@Anwar: I updated my question with the errors I incurred using your suggestion. –  Paul Jan 19 '13 at 17:07
Please post the complete output, not only the last lines. –  guntbert Jan 19 '13 at 17:37
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