First off, this should have been posted in the x51v forums, but this applies to x50, etc. anyway...
Well, I got my replacement from Dell and the thing looked great and I was a "Happy Camper"

. After about a half day I noticed that the screen was again dim on the right side on this new unit.
It ends up that the Axim is docked too close to my 22" CRT monitor and is causing a "gaussing" problem. I've never heard of degaussing an LCD monitor so I'm asking Dell for another replacement. I've had other PDA's (Viewsonic V37, Casio E-100) docked in the same position over the years and never had this problem.
In any case, sitting your PDA too close to your monitor can be bad news for these hi-res screens, so pass the word around.