I found this in my email:
I will disable Java plugin in all browsers on my machines at work on Monday.
Cert.org is taking this seriously: http://www.kb.cert.org/vuls/id/625617
This could be used against Linux, Mac or Android, not just Windows, if anyone cared to try. They would not have access to root without further exploits, although popping up a window that looks like your Updater, or Microsoft’s, would catch some inexperienced Linux users.