I've been a Ubuntu user since Warty. Debian unstable user before that. Started using Linux in 1997 with RedHat 5.1 (shudder) after reading about it on /. -- before they had user numbers :-) . I consider myself an advanced user, almost at the sysadmin level. I do sysadmin work for my home network and my church. I love Linux and Ubuntu is the best distro I've used hands down. Were not for work, I would not have anything else on my computers.
Professionally, I work as a software analyst in health care.