[CentOS] OpenLDAP supportedSASLMechanisms order

On 2 srv centos 4.4, run slapd.

On one, supportedSASLMechanisms order is :
supportedSASLMechanisms: DIGEST-MD5
supportedSASLMechanisms: GSSAPI
supportedSASLMechanisms: CRAM-MD5

and on the other one is :
supportedSASLMechanisms: GSSAPI
supportedSASLMechanisms: DIGEST-MD5
supportedSASLMechanisms: CRAM-MD5

i'd like to use GSSAPI on all srv ...
How can i change the order to force GSSAPI first ?
or
Why the order is different ?

Thanks
______________________________________________
Emmanuel Fournier - ICT
mailto:fournier at ict-toulouse.asso.fr