It's actually spread via an email trojan, so the usual rules for MS-Windows users not to open unsolicited/unexpected attachments apply. There is no description given as to what email clients are vulnerable platforms from which this trojan can launch.
Absent specifics, I'd assume that MS-Outlook is the usual culprit, or they'd be screaming about vulnerabilities in the other clients.
The way the extension operates, it would be advisable to only download extensions from known good locations.
General tech ping please.
Lots of commentary over here:
http://www.freerepublic.com/focus/f-news/1672528/posts
Plus Firefox 1.5.0.5 was released yesterday.
Just go to Help -> Check for Updates to load it in.
I did it late yesterday and works fine.
Thanks for posting this. Not that there's a chance in a thousand I'd open an email from WalMart, but it's good to know what's up with Firefox. Spyware was ruining my life until I got Firefox.
I got an update when I opened FF. I believe it has been nipped. Folks who open non expected att's in e-mails deserve the pain