Aleksey,

What I did is:

Stopped firebird 2.5.3 server
Renamed bin folder to bin orig
copied BIN folder from zip file I downloaded (snapshot 2.5.4)
started firebird server
Checked server vesrion - it says 2.5.4.26842

Continuing import after 72.000.000 rows, now I get folowing timings:

100.000 import time - 86 seconds
Commit - 68 seconds

Can you confirm, did i do everything OK?

Regards,

Zoran