Lee say: ""I think I can explain. I don't believe that there is such an arbitrary precision bug in later versions of Fractint. In your deepest zoom at a magnification of e^89, and using a maxiter of over 2 billion, the image does "freeze" once the showdot reaches the edge of the minibrot. But, unless you had a very powerful machine (much faster than your P3-733), it would be expected to take a very long time per pixel, and thus appear to freeze up."" No. That is the first thing I thought of. But if that was it ALL versions of fractint would show the same behavior. They do not. It does take longer to get through the lake area, but if you hit TAB a couple minutes apart, you will see different number for row/column etc showing it is still working, albiet slowly. When I say it freezes I mean it locks up on one pixel and doesn't procede any further - same row/column for hours. No problem with the E+55 minibrot (the second one) in the video, but on the final E+89 brot, shortly after the tiny black spot in the center begins to resolve itself, the freeze happens and I switch to Fractint95 and it works. I call it fractint95 because the date on the file is 1995, I think it is version 19.3 or 19.6. The freeze happens at the boundary of the minibrot, about half way through it. Exactly why or what is going on I do not know, I suspect an endless loop - it never bails for some reason. If I save the image at this point and reload it into fractint95 it continues normally. As to the depth at which it occurs, it is between E+55 and E+89 obviously, but I recall this happening many years ago also before I started making animations, just deep stills. I have all fractint versions since the "fractal creations" CD, which I recall is version 16. They do not all behave the same! Some work for some things and others don't. You may find this out if you do a lot of experimenting. I wish I could get the old versions just to check out - starting with version 1.0 in 1987! Anyone know where / if these are available? JoTz