build1010 FXP fails in Winxp with windows firewall

[divfor]

faint, this is bugs report, not support.
in my mind, flashfxp not support FXP well in Windows XP + sp1 or sp2. i have try same two sites using ultrafxp, it works well. I have captured the packets of FXP using ethereal tools, it appears that flashfxp makes a wrong port request to fxp dst_site after getting a "enter passive mode x.x.x.x, p1, p2" from fxp src_site.