Double-whammy security flaws target Firefox
Here is the security notice:
Internet security firm Secunia rates the security flaw as "extremely critical", because code to exploit the flaws is publicly available.
- Do not have any sites in your “Allow web sites to install software“ whitelist.
Further information here:
At time of writing, no patch is available for this vulnerability. Be prepared to download a full installation build [4.7 meg] to fix this problem.