It seems to me that there are two different issues in this bug report. One about /var/lib/dpkg/lock and the other about ttf-mscorefonts- installer. Trying to cope with the first one:
can you give the output of the following command. To enter the command open a termina (ctrl+alt+T, or from applications menu), then cut and paste sudo apt-get update -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/701339 Title: Cannot use software center apps dont install -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
