Patch

http://sql.ru/forum/actualthread.aspx?bid=7&tid=747614&pg=1 horror story about duplicate records in a table with UNIQUE index. The guy buid a pg himself (w/out knowing much about it), at some point pg included a patch that changed string sorting order, and that led to duplicate records. / you had to do REINDEX before using the version with that ICU patch, but the guy didn’t know /

http://lwn.net/Articles/362339/#Comments notes from LWN about RPS patch – a way to distribute incoming traffic coming from 1 source (1 NIC, 1 queue, 1 IRQ line) via multiple CPU by hashing tcp headers and distributing by hash across multiple CPU/Cores

http://web.mit.edu/ksplice/ new way (hopefully will be mainstream soon) to apply updates to linux kernel"on the fly", i.e w/out need to reboot. The system is more or less a hack at this moment.