thanks ada support.
.. I did change to a 4ea 1.2V, 2450mAh battery producing 4.6V, 2450 mAh supply that reduced current of ardun/log w/ DHT 22 that resulted in a current of 20.1 mA. That will extend operating time to about 5 days. Now what can be done to get at least 3-5 months.
UPDATE 10-2013 :
the WDT and AVR sleep reduces the current to 10-11 ma. Is there a MCU board which connects to the logger and programed from a pc that reduces this to below 1 ma when in a power down mode?