I have an '04 that I got last summer and just got around to swapping the springs. When I did that, I couldn't believe the stuff that came out. My bike is never in the water, but the so-called "oil" in one fork leg looked like the glop dripping off of one of those swamp things in a cheap B movie. My steering head bearings were well lubricated though. I have heard the same thing from other owners too, one leg looks pretty good, the other one is filled with toxic waste. I did the rear suspension as soon as I brought the bike home, and it was dry. I would say to change your fork oil now, even if you don't swap springs, but it's actually harder to do the oil than the springs, so you might want to consider having the springs on hand too.
Good luck with your bike,
Mike.