I found "where" is the problem

if i simplify fbtrace.conf to
< database>
enabled true
log_filename "C:\\Program Files\\Firebird\\Firebird_2_5\\trace_log.log"
connection_id 0
log_statement_prepare true
log_statement_free true
log_statement_start true
log_statement_finish true
time_threshold 0
< /database>

then this work for me
but default file with changed all position form false to true not work
should i post this issue to the fbtracker?

Karol Bieniaszewski