Palm has released software update 1.0.4 for webOS and the Palm Pre. The download is 12MB and the update takes roughly 10 minutes to complete. To get the update, simply access the Updates app on your Palm Pre. According to Palm, this release addresses several security issues with Palm webOS software.  Palm has also set up palm.com/security where individuals can report suspected security issues. While nothing else is listed yet in 1.0.4, you can find the changelog at Palm's website.

Update: This release apparently patches a leak that allowed "homebrew" apps to be installed on a Pre that was not jailbroken.

You can discuss the 1.0.4 software update in our forums.