Not much to say here, but a new release of Firefox 3.6 was made purely to address the recently demonstrated exploit in the Pwn2Own contest.

Due to the critical nature of the exploit, the developers of Firefox made the decision to release a new version solely to address it. Suffice to say that this is a highly recommended update. The exploit uses a memory corruption flaw to execute code, which occurs in the Garbage Collector for DOM.

All users are recommended to update, which should occur automatically. If you haven't seen an update notice yet you can trigger it from the Help menu. Of course you can also download the entire file.