Hacker News on 13 October 2011

• Rob Pike: Dennis Ritchie has died
• IOS 5's "Cleaning" Behavior
• Lights
• RIP, dmr
• Bjarne Stroustrup on Dennis Ritchie: They said it couldn't be done, & he did it
• RIP, Dennis Ritchie, Father of Unix and C
• Ubuntu 11.10 Released (Online Tour)
• The last time I saw Steve Jobs
• 250x Speed Improvements with Microcaching (and No New Code)
• Forced Exercise's Effects on the Brain