Firefox browser has been updated to 2.0.0.5 two days ago. If you are using any version lower than that, you really should update yourself to that. I have bad experience of delaying an application update, and that really cost me something, so be quick or be ready to fix.

Here’s what’s new in terms of security in Firefox 2.0.0.5

XPCNativeWrapper pollution

Unauthorized access to wyciwyg:// documents

Remote code execution by launching Firefox from Internet Explorer

File type confusion due to %00 in name

Privilege escallation using an event handler attached to an element not in the document

Frame spoofing while window is loading

XSS using addEventListener and setTimeout

Crashes with evidence of memory corruption

Click here for details.