I just got a samsung syncmaster 2343 23" 2048x1152 monitor.. and when it's plugged in to my mac there is one pixel near the bottom left corner that shows up as white.. however, when i zoom in with control+scroll, it gets bigger and when i take a screenshot, it shows up in the screenshot. it appears on all resolutions, but when i change the resolution it moves, always appearing the same distance in pixels away from the edge of the screen. It appears when using the DVI cable directly and when using the D-Sub connected to a D-Sub->DVI converter cable I have with my macbook pro 17" (mid 2008). the pixel does not show up white when hooked up to a pc. very confused by this.. just wondering if anyone has suggestion on how to fix it possibly.. I'm guessing it's a video card issue bc I can't think of what else (i'm on snow leopard.. btw) addendum: the white dot does not show up on my bootcamped windows 7. it doesn't actually show up on the mac login screen either. it turns on as the mac is logging on. not immediately, but at some point after it's logged in and is loading programs. it is NOT there if i mirror the displays rather than extending them.