Different code cost on mirror machines (gsm and alaw)

I have 2 exactly same servers (HP G6 in 32bit) same version on linux, asterisk… (everything) but each one is showing diferent codec cost. varies from 1 to 4000.
Whe whole /etc/asterisk is exactly the same.
If i copy the codec_gsm.so from one host to the other, does not change anything.

The following test was performed whith autoload=no;
and try to load codec_gsm.so

HOST 1:
.-------------------------------
*CLI> module load codec_gsm.so
== Parsing ‘/etc/asterisk/codecs.conf’: == Found
– codec_gsm: using generic PLC
== Registered translator ‘gsmtolin’ from format gsm to slin, cost 1
== Registered translator ‘lintogsm’ from format slin to gsm, cost 4000
*CLI> Loaded codec_gsm.so => (GSM Coder/Decoder)

HOST 2

*CLI> module load codec_gsm.so
== Parsing ‘/etc/asterisk/codecs.conf’: == Found
– codec_gsm: using generic PLC
== Registered translator ‘gsmtolin’ from format gsm to slin, cost 1
== Registered translator ‘lintogsm’ from format slin to gsm, cost 1
*CLI> Loaded codec_gsm.so => (GSM Coder/Decoder)