[Nek5000-users] strange output-duplicate points

[nek5000-users at lists.mcs.anl.gov]

Hi,all:
   I run the turbChannel example, and find a strange thing related to output. In the means.dat,

#time =  8.0000000E+01
#  y     y+    Umean
  0.000000000E+00  0.000000000E+00  0.000000000E+00
  2.565198406E-03  1.235928661E+00  1.240919300E+00
  8.166000752E-03  3.934430317E+00  3.853070992E+00
  1.581402413E-02  7.619295888E+00  6.748781538E+00
  2.418599733E-02  1.165296502E+01  8.841965326E+00
  3.183402071E-02  1.533783060E+01  1.011635642E+01
  3.743482305E-02  1.803633225E+01  1.084184821E+01
  4.000002146E-02  1.927226091E+01  1.113974222E+01
  4.000002146E-02  1.927226091E+01  1.113974222E+01

take a look at the last two lines, it's same! So the solver output the duplicate values, how can I correct this strange behaviour?
Have a nice weekend

Xianbei
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