ok so I go to the questionable site and download a questionable file my macbook which is encrypted with firewall and the advance firewall options enable- my macbook wireless card address only allows my computer and nobody else to connect wirelessly to the router with the highest wap wireless encryption. with in 30 seconds my harddrive size went to 0 my computer locked up and I restarted.so I try to log back in. nothing, just sits at the password wit hthe login already pressed. so I had another user account just incase this happens. so I log in. attempt to get files off user account only for my user account that acted up not to exist. the folders are there. so I enabled root ,tried again. it still wouldn't let me into the files says folders didn't exist. basically in 30 seconds everything gone. lucky I keept a external firewire driver seperate , I had to do a complete reformat and reinstall but what could have caused this. I've been hit by virses but nothing this severe, even with top encryption. ??????