1996 - present ..
Slack -> debian -> RH -> fedora -> corelinux with blfs packages -> oh fsck it, 2003 - 2007 LFS dev version + BLFS -> ubuntu / ubuntu server (current)
tried mandrake and suse, didn't like same for gentoo
currently, vm system running 12.04lts server + 7 vbox vms also running 12.04lts server. Have 12.04lts installed on my desktop and laptop (dual boot systems), but rarely boot because unity just pisses me off .. lol