Had a posting problem.  I apologize if it appears twice.

I have an odd problem that I cannot fix.

I am running OfficeXP.  When running a Powerpoint slide presentation and if
I black out the presentation (by using the 'B' key), I can bring the
presentation back by pressing any key (except 'CTRL', 'ALT', 'SHIFT' - may be
other 'special' key as well) on the key board.

The implication is that if I want to advance to the next slide by, say,
pressing the right arrow key, I have to press the right arrow key twice.  
Also if I want to jump to another slide that is out of sequence, say jump to
slide 23 ('23 + ENTER'), it will take the first keystroke ('2') to unblank
the screen then jump to slide 3.  This is very distracting to the audience.

I've tried other Powerpoint installations on differenct computers but none
behaved this way.

I've searched everywhere, used HELP in Powerpoint, and tried all the
drop-down menus in Powerpoint but still I could not find a solution to the
above problem.

Has anyone out there encountered this problem and how did you fix the problem?