Chain rust = replacement?

[redrhodie]

When the links start freezing into place, you probably need to replace the chain. If it's superficial surface rust, a little cleaning and lubing should do the trick.

I actually had 2 chains rust on me from over-cleaning. (I'm a jeweler, so my idea of clean was apparently a little overzealous) I've switched to a heavier duty lube, since I ride in damp, salty conditions, and that has helped.