issues in installation of mongo DB

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http://askubuntu.com – I was in stalling mongo DB on my UBUNTU-12.04 system,but while i give the following command in my terminal apt-key adv --keyserver keyserver.ubuntu.com --recv 7F0CEB10 It gives me the following error gpg: requesting key 7F0CEB10 from hkp server keyserver.ubuntu.com gpg: keyserver timed out gpg: keyserver receive failed: keyserver error Is there any other way of installing mongo db or what can be done to avoid the above situation Thanks (HowTos)