W: GPG error: http://download.opensuse.org  Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 977C43A8BA684223
W: GPG error: http://download.opensuse.org  Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 977C43A8BA684223
W: Failed to fetch http://ppa.launchpad.net/ondrej/php5-oldstable/ubuntu/dists/utopic/main/source/Sources  404  Not Found

W: Failed to fetch http://ppa.launchpad.net/ondrej/php5-oldstable/ubuntu/dists/utopic/main/binary-i386/Packages  404  Not Found

E: Some index files failed to download. They have been ignored, or old ones used instead.
acid@sone:~$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Calculating upgrade... The following packages were automatically installed and are no longer required:
  libuser1 python-central python-libuser python-support
Use 'apt-get autoremove' to remove them.
Done
The following packages have been kept back:
  owncloud
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
W: Duplicate sources.list entry http://dl.google.com/linux/chrome/deb/ stable/main i386 Packages (/var/lib/apt/lists/dl.google.com_linux_chrome_deb_dists_stable_main_binary-i386_Packages)
W: Duplicate sources.list entry http://download.opensuse.org/repositories/isv:/ownCloud:/community/xUbuntu_14.10/  Packages (/var/lib/apt/lists/download.opensuse.org_repositories_isv:_ownCloud:_community_xUbuntu%5f14.10_Packages)
W: You may want to run apt-get update to correct these problems
acid@sone:~$ sudo apt-get install php5
Reading package lists... Done
Building dependency tree       
Reading state information... Done
php5 is already the newest version.
The following packages were automatically installed and are no longer required:
  libuser1 python-central python-libuser python-support
Use 'apt-get autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
You have new mail in /var/mail/acid
acid@sone:~$ php -v
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php5/20090626+lfs/mysqlnd.so' - /usr/lib/php5/20090626+lfs/mysqlnd.so: cannot open shared object file: No such file or directory in Unknown on line 0
PHP 5.3.10-1ubuntu3.17 with Suhosin-Patch (cli) (built: Mar 17 2015 12:01:11) 
Copyright (c) 1997-2012 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2012 Zend Technologies
acid@sone:~$