IDLE's cursor blinks with Python 3.0 on Linux.

But it shouldn't (and doesn't for prior versions) because in my
.Xdefaults file I have the line:
*insertOffTime: 0

Now I have to manually edit idlelib/EditorWindow.py to stop the cursor
from blinking.
(I also have to do this on Windows because IDLE ignores the blink rate
set in the control panel.)

I am one of a minority of people who cannot work with blinking cursors.
I hope that at the least IDLE will get an option to switch it off.