According to Symantec, attacks may not be limited to using PDF files. Web-based attacks against the Flash flaw could potentially allow for a drive-by-download, so these are fixes most everyone will want ASAP.

Start with Flash: you can check your current version , but unless you've already updated today you'll almost certainly need the fix. Anyone with 10.0.22.87 or earlier will need to download and install , or wait to be prompted by Flash's auto-update. Updates are available for Windows, Mac and Linux, but the Solaris version is still pending, according to .

If you're stuck with version 9 for some reason, you'll need to .

When you're done with the Flash fix, move on to the Reader update. For that you can open Reader and select Tools | Check for Updates, or head to the download pages , or .

For Acrobat Standard and Pro on Windows, . and need a fix as well.