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3answers
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How do I unlock /var/lib/dpkg/lock? [duplicate]

I attempted to install dropbox on my Ubuntu system, but now I am unable to install or uninstall any software. I get this error: E: Unable to lock the administration directory /var/lib/dpkg/lock? I ...
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9answers
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Dropbox install stuck at 99%, how do I fix it? (and any dpkg errors)

I tried to install Dropbox using How to install Dropbox?, or with apt-get install nautilus-dropbox. Dropbox loads until 99% and then hangs, causing the system to go to 100% cpu usage. If I reboot or ...
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2answers
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Software Center is stuck for Dropbox “applying changes” [duplicate]

Possible Duplicate: Dropbox install stuck at 99%, how do I fix it? (and any dpkg errors) I wanted to download and install Dropbox, but it has been stuck "applying changes" for almost an ...