I, also, am having this problem.  I just bought a refurb 2001fp direct from Dell.  Out of the box, it looks terrible.  About half of the colors are perfectly fine; the other half have tv-like static constantly dancing.  I'm currently exchanging tech support emails...I fear I'll have to pack up this beast & send it back.  Please reply if you've found some fixable glitch.

FOLLOW-UP TO MY PREVIOUS POST:

In total I cycled through three (supposedly refurbished) 2001fp monitors. 

 - The first had the dancing pixel/graininess problem mentioned above.  After several emails to tech support, I finally convinced them that it was a hardware problem.  They sent another one; I sent mine back.

 - The second was sans graininess but had an always-illuminated white stripe running vertically through the entire height of the monitor.  Same story: several tech support emails, eventually convincing them that the monitor was busted.  They sent another one; I sent mine back.

 - The third (and final) monitor was perfectly fine. I'm typing on it right now.

Morals of the story:  Refurbished Dell LCDs are risky business.  The refurbishing process involves repackaging a broken monitor and hoping some schmuck will just live with the malfunctions.  Dell's online tech support was eventually helpful, despite several cookie-cutter responses to an obvious hardware problem.  Be very specific in dealing with them, and be sure to make it plainly obvious that the monitor is BROKEN.  The money I saved in buying refurbished definitely did not offset the 3-4 weeks that it took to get it right.  Buy new, get the full warranty.