I am a newbie please help. Unable to install updates. Details shows:
The following packages have unmet dependencies:
icedtea-7-jre-jamvm: Depends: openjdk-7-jre-headless (= 7u55-2.4.7-1ubuntu1~0.12.04.2) but 7u51-2.4.4-0ubuntu0.12.04.2 is installed
Depends: zlib1g (>= 1:1.1.4) but 1:1.2.3.4.dfsg-3ubuntu4 is installed
openjdk-7-jre: Depends: openjdk-7-jre-headless (= 7u55-2.4.7-1ubuntu1~0.12.04.2) but 7u51-2.4.4-0ubuntu0.12.04.2 is installed
Depends: libjpeg8 (>= 8c) but 8c-2ubuntu7 is installed
Depends: libpulse0 (>= 1:0.99.1) but 1:1.1-0ubuntu15.4 is installed
Depends: libgl1 but it is a virtual package