Using the latest CVS version (4.5) I get some strange error.
Try to plot a simple function (plot x) then zoom with the mouse and push "a" on the graph for autoscale ... I get a message : "undefined variable: xkeepfix".
I have to mention that since a month or so I has other problem while zooming data files as well.
My system is an ubuntu 9.10,
thanks a lot,