Originally Posted by troyz 
I ran into crazy reds on my first roll of Ektar -- insanely red car tail lights, red berries against green leaves with no detail in the berries, for example. I don't think it was a development or scanning problem (good lab, Nikon scan) -- just overexposure of the red layer.
In any case, check the negatives (look for crazy cyans) and try using -1/3 to -2/3 EV compensation (i.e. rate the film as ISO125 or ISO160) to get the reds under control.
Good point regarding the ISO. My first roll that had weird colors was exposed at ISO 60. This last roll at ISO 100. I suppose I could waste a few frames and do some test shots at various ISO settings on my next roll.
Steve