When I run justMAS() from the simpleaffy package on linux I get spurious 
results for about 5-10% of the .CEL files.   If I re-run justMAS() on the 
same .CEL files, the previously spurious chips are fine, but a different 
5-10% of chips have bad results.

It seems like some sort of memory initialization error.  Is this a known 
problem?

Eitan Halper-Stromberg reported similar problems on MAC OS:
        https://stat.ethz.ch/pipermail/bioconductor/2005-July/009634.html

sessionInfo() is as follows:

R version 2.1.0, 2005-04-18, i686-pc-linux-gnu

attached base packages:
[1] "tools"     "methods"   "stats"     "graphics"  "grDevices" "utils"
[7] "datasets"  "base"

other attached packages:
simpleaffy       affy reposTools    Biobase
  "2.0.13"    "1.6.7"   "1.5.19"   "1.5.12"
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