Woooooooooo i've fixed it (i think) i had an apparant variation of the vundo trojan
http://bbayles.googlepages.com/antivundo.html
All it took was me deleting one file in the sytem 32 place. I'm running a couple of virus scans now to make sure i have got rid of everything but i can access facebook and log in here now properly! its a little slow but i think thats because i deleted all cookies/cache
