;screen printed in top left corner

[Dave Wood]

I find after switching screens a few times that I get either ';screen' or
';xterm-xf86-v40' printed in the top left corner and this tends to push
everything on the first line along and onto the next line which tends to
corrupt the application's normal rendering.

Any idea what causes this and any solutions?

Cheers

--
Good advice is something a man gives when he is too old to set a bad
example.
                -- La Rouchefoucauld