Considering how secure XP is - and that there's a new Filesystem and Internet Explorer and obviously a Firewall two years superior to that of SP2's, and how good that is...
I have all belief it will be more secure than most Linux Systems of the time.
A Knight is sworn to Honour. His heart knows only Virtue. His blade defends the helpless. His might upholds the Weak. His word speaks only truth. His wrath undoes the Wicked.