The code below changes the starting value of a to the last value of b (in Maple 14). Is that a feature?

> a := matrix(2, 2, [1, 2, 3, 4]);
> b := a;
> for i to 2 do for j to 2 do b[i, j] := (1/3)*b[i, j] end do end do;
> evalm(b);
> evalm(a);

I use Maple 9.5 on a Mac PowerPC G4.

Recently I have been unable to open a new worksheet. I have restarted my machine numerous times.

Do you have any suggestions for what to do--I am away from home and don't have the software to reload.

I think the problem first started because I opened some old files--running Maple 4 or 5.

Thanks,

Roger