2408: Sparkling pixels upon waking...?

I just received my Ultrasharp 2408 (refurb) and, first of all, must say that this is a big, gorgeous monitor and comparing it to my old, faithful Sony Trinitron is like night and day. The display is an A01 and I notice that the sharpness adjustment is graduated in units of 10 so I'm assuming this is a late model revision with the newest firmware based on what I've been reading on these forums. It's attached to a G5 Mac via DVI with an ATI Radeon 9600 XT graphics card. I LOVE it....except --

Upon waking from sleep, I'm seeing a smattering of what appear to be sparkly pixels primarily in the southeast quadrant (sorry - lower left :-) ) of the screen. Weirder is that it appears to be DIFFERENT pixels each time I need to wake the display. They twinkle white for a bit and gradually disappear over the course of, oh, about 3-4 minutes as the display....warms up, I guess.

This is obviously greatly concerning to me and I'm guessing I need to get a replacement. Is this a known issue? Is there a way to fix it?

Thanks,

Neal