It's a Windows problem
Linux users move along nothing to see here.
A dangerous worm is using Facebook to spread itself by posting malicious links on the social networking website that point to malware-tainted sites loaded with a variant of the Zeus banking Trojan as well as other nasties. The malware uses stolen Facebook account credentials to log into compromised accounts and post links, …
Technically speaking this isn't a worm as in order to spread, it requires human beings to click on links and enter their admin password. A more interesting question is how the malware writers got hold of the Facebook account credentials. Does this Facebook banking worm run on Apple Macs or Linux?