Obviously you didnt read the many posts which ask you to give more details...
Please, What Build of FlashFXP ? (Don't just say latest)
What OS ?
What FTP server software are you connecting to ? does it only happen on one site/server or others as well ?
Are you behind a Firewall ( Zonealarm, Blackice, Windows XP, etc) ?
Are you using a proxy server for FlashFXP ?
Just explain it in a bit more detail...
http://forum.flashfxp.com/showthread...&threadid=1222