A point of clarification: the term campaign is pretty vague when talking about RPGs. To some it's a tightly knit series of stories that have a beginning, middle and end and a finite lifespan. Sometimes it has an end goal, but is also has a more episodic feel about it (think Babylon 5's run). Or sometimes it's just a series of adventures with the same characters, occasional reoccurring bad-guys and themes (think the James Bond movies - well, up until they ruined them with the last four).
So, how long do your campaigns last? The question spins out of a thread over in F&D where someone said that a game at 600 points was a good wrapping up point (or more accurately, said that the GM and players would be sick of the game by 600 points). Meanwhile my game just broke 675 - and I still could easily spend another 100 points just to get to the concept! More importantly, my story is far from finished!
Further, at 1.5 years my game is kind of on the short side - I've had campaigns that ran years and years. Our Padawan game kicked off in 2000, after we had enough information about the Old Republic to run a game and we played, on and off, until just after Revenge of the Sith came out., 2006.
So what's your average. How long do your campaigns last?