You don't say anything about your system or it's specifications, except this is XP, but it may be normal.
I assume that after the pause, when you press play, the video plays normally after that brief 1 second pause? Your system may be busy on other matters. If you have low memory, (RAM), the system may have to reload the video into RAM to resume playback.
Windows XP pro: I've downloaded media player 11 several times but whenever I press play after having been on pause, the picture freezes for a second. I've diddled with all of the media player setting possible. Any help? Thanks!