Best Linux distro for home server?

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http://www.linuxquestions.org – I know this has been asked a million times here, but I was unable to find a thread for it. Would like opinions as to the best linux distrobution for a home network file/print server. Must be fast and relativly easy to set up and troubleshoot, should something go wrong. My current server is an aging socket 478-based system running Ubuntu 10.04 (tried 12.04, but it didin't like my Nvidia video adapter, and the os is slow on that machine anyway). The new OS i choose will likely be onstalled on a new machine, a home-built socket LGA 775 system with an Asus mainboard and 4 GB of DDR2 SDRAM, as well (HowTos)