Apologies to those for whom I am teaching to suck eggs, but with all the problems, particularly this one, the FTP servers, the iTunes not working, try repairing permissions:
Open /Applications/Utilitities/Disk Utility, select your hard drive and click on "Repair Disk Permissions". Ideally you should do this after every Installer based install (as opposed to drag and drop install) and regularly (once a month or so for me seems to be fine).
I highly recommend Panther Cache Cleaner for this and other maintenance tasks, especially on laptops. Running daily/weekly/monthly maintenace scripts through PCC does wonders for my TiBook performance.
Hope it helps.
Sanjay