(Slaps forehead!)

Yep - this works a treat for every mode except the GL ones (same problem); and
as they're a little creaky on an IPX, they're no great loss.

Thanks for your help, folks :-)

Dan.

> >>>>> "Daniel" == Daniel Brown <dbrown@ccdc.cam.ac.uk> writes:
> 
>     >> Using -install also fails (but interstingly, running xlockmore
>     >> in a window does 'the right thing' colorwise, but with a
>     >> private colormap)...
> 
> What about '+install'? (This should turn off installation of own
> colormap!?)
> 
> Otherwise you could turn off this feature via Xresources
> (/usr/X11R6/lib/X11/app-defaults/XLock: XLock.install: off)
> 
> Markus.