CDO

Hello,
I have a problem with some downloaded Climate Forecast System Reanalysis CFSR from NOAA (Saha 2010) data in CDO.
I downloaded these data from the homepage: ftp://nomads.ncdc.noaa.gov/CFSR/HP_monthly_means/198701/
(flxf06.gdas.198701.grb2)
If I try to look inside these data, with cdo showname flxf06gdas.198701.grb2, I get always the following information:
GRIB_API ERROR : Invalid size 70 found for section_4, assuming 74
GRIB_API ERROR : Invalid size 70 found for section_4, assuming 74
GRIB_API ERROR : Invalid size 70 found for section_4, assuming 74
GRIB_API ERROR : Invalid size 70 found for section_4, assuming 74
stream_gripapi.c at line 258: grib_get_size(gh, “values”, & datasize) failed: Key/value not found

I have downloaded one again, but the problem still exists.

Could it be a problem with my CDO version 1.5.3 from Ubuntu(12.04 LTS)?
With the time series data (hourly) from CFSR there was no problem.

My cdo -V info:
Climate Data Operators version 1.5.3 (http://code.zmaw.de/projects/cdo)
Compiler: mpicc -std=gnu99 -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Wformat-security -Werror=format-security -fPIC
version: gcc: error: unrecognized option '-V'
with: PTHREADS Z JASPER PROJ.4
Compiled: by buildd on allspice (x86_64-unknown-linux-gnu) Dec 12 2011 14:32:18
CDI library version : 1.5.3 of Dec 12 2011 14:32:13
GRIB_API library version : 1.9.9
netCDF library version : 4.1.1 of Nov 7 2011 11:35:16 $
HDF5 library version : 1.8.4
SERVICE library version : 1.3.0 of Dec 12 2011 14:32:01
EXTRA library version : 1.3.0 of Dec 12 2011 14:31:57
IEG library version : 1.3.0 of Dec 12 2011 14:32:00
FILE library version : 1.7.1 of Dec 12 2011 14:31:58

Thanks a lot
Lena