Do you have a spare VGA cable or can you borrow one?
Also, try re-installing the video drivers.
Thanks. I recently updated the video drivers. Unfortunately I only have 1 VGA cable. I may try a new video card.
One additional thing I have noticed ont his monitor is that the stand it is on has a short base and the monitor tends to physically wobble a little if I lightly hit my leg against the computer desk or bump the desk.
I'm not sure that is common for 22" widescreen LCDs.