Things seem to have stabilized. I don't view Dean's uptick by 1 percentage point of Clark's downtick of 1 percentage point as particularly significant (either statistically of quantitatively).
http://americanresearchgroup.com/nhpoll/demtrack/
3-Day Results Jan 9-11
Braun 0%
Clark 19%
Dean 36%
Edwards 3%
Gephardt 4%
Kerry 10%
Kucinich 1%
Lieberman 10%
Sharpton 0%
Other 0%
Undecided 17%
Sample size 616
Democrats 425
Undeclared 191
Undeclared (%) 31%
Margin of error is ± 4 percentage points