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File permissions on pulseaudio libs - Lost all sound

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linux-howto

http://askubuntu.com – Following up on this: What to do when Skype freezes silently? and this: Where to find/install libpulsecore-1.0.so? Pulse audio problem I ran sudo chmod a-r libpulsecore-1.0.so to fix a problem with skype freezing up. Once I did, my permissions changed from: -rw-r--r-- 1 root root 613396 2011-10-27 00:27 libpulsecore-1.0.so to --w------- 1 root root 613396 2011-10-27 00:27 libpulsecore-1.0.so It worked, and skype was fine for the rest of my session. However, on rebooting, I no longer had any sound. How can I reset permissions to keep working sound and working skype (HowTos)