[Xylem]

10b working fine on my machine; vista 64 and all. Is that by any chance the new 'installed' version?

But actually I was waiting for conversation to move to 'fish movement' because I think I noticed a small anomaly, and would appreciate anyone confirming it so we'll know whether it's just my machine or a generall problem:

I notice that the fish exhibit a strange 'staccato' up-and-down movement at times. Usually (I think) it's when it is near the bottom, and especially when another fish swims directly over it. It's as if the fish is bouncing rapidly (almost vibrating) between the bottomg and the other fish.

Is this just me?