Ljung-Box test in S-Plus

[Riccardo Gusso <rgusso@unive.it>]

Hello,
the null hypothesis in the Ljung and Box test should be strict white
noise, that is i.i.d., finite variance random variables; but in S-Plus
autocorTest with method "lb" output I read:

Test for Autocorrelation: Ljung-Box

Null Hypothesis: no autocorrelation

Is this only a lexical question, or the S-Plus implementation of Ljung
and Box test is testing only the absence of correlation between random
variables?

Bye,
          Riccardo