draguve@Patil-Server:~$ sudo apt-get update

[sudo] password for draguve:

"Ign http://security.ubuntu.com trusty-security InRelease
Ign http://extras.ubuntu.com trusty InRelease
Ign http://in.archive.ubuntu.com trusty InRelease
Hit http://security.ubuntu.com trusty-security Release.gpg
Hit http://extras.ubuntu.com trusty Release.gpg
Ign http://in.archive.ubuntu.com trusty-updates InRelease
Hit http://security.ubuntu.com trusty-security Release
Hit http://extras.ubuntu.com trusty Release
Hit http://security.ubuntu.com trusty-security/main Sources
Ign http://in.archive.ubuntu.com trusty-backports InRelease
Hit http://extras.ubuntu.com trusty/main Sources
Hit http://security.ubuntu.com trusty-security/restricted Sources
Hit http://extras.ubuntu.com trusty/main i386 Packages
Hit http://in.archive.ubuntu.com trusty Release.gpg
Get:1 http://security.ubuntu.com trusty-security/universe Sources [10.8 kB]
Hit http://in.archive.ubuntu.com trusty-updates Release.gpg
Get:2 http://security.ubuntu.com trusty-security/multiverse Sources [700 B]
Hit http://in.archive.ubuntu.com trusty-backports Release.gpg
Get:3 http://security.ubuntu.com trusty-security/main i386 Packages [136 kB]
Hit http://in.archive.ubuntu.com trusty Release
Hit http://in.archive.ubuntu.com trusty-updates Release
Get:4 http://www.plexapp.com lucid InRelease
Get:5 http://www.plexapp.com lucid InRelease
Hit http://in.archive.ubuntu.com trusty-backports Release
Get:6 http://security.ubuntu.com trusty-security/restricted i386 Packages [14 B]
Get:7 http://in.archive.ubuntu.com trusty/main Sources [1,064 kB]
Get:8 http://www.plexapp.com lucid InRelease
Get:9 http://www.plexapp.com lucid InRelease
20% [9 InRelease gpgv 23.4 kB] [7 Sources 76.5 kB/1,064 kB 7%] [Waiting for heaSplitting up /var/lib/apt/lists/partial/www.plexapp.com_repo_dists_lucid_InReleasIgn http://www.plexapp.com lucid InRelease
E: GPG error: http://www.plexapp.com lucid InRelease: Clearsigned file isn't valid, got 'NODATA' (does the network require authentication?)
draguve@Patil-Server:~$ "