Well thanks for that.
The winsock xp sp2 fix worked a treat for me.
I have been going mad for weeks with this problem, kept having to sit and watch the usage and abort the transfer when it started going high and then resume
Now i can just let it get on with it
FlashFXP 3.0.2 Build 1045 (Registered)
Zonealarm Interet Security suit 5.5.062.011
No Router
ADSL
WinXP SP2