XF86 4.2.1 upgrade problem

[Richard Kimber <rkimber@ntlworld.com>]

I run testing, and have just upgraded X to 4.2.1-3, and I eventually got
it
working OK.  However, although I'm using the same XF86Config file as
before, and have not made any screensaver or other changes, my monitor no
longer goes into power saving mode as it used to with the previous version
of X.  Now the screen just goes blank.

I'd be grateful for any pointers as to why this has happened.

Thanks,

- Richard.