Adobe Acrobat/Reader 9.4 and 8.2.5 -- Adobe has released updates for Adobe says that there "are reports that this vulnerability is being actively exploited in the wild," and thus unsurprisingly recommends that you update immediately, either from within the products or via the . (Free updates, various sizes) and  - 9.4 for the current 9.x versions and 8.2.5 for the older 8.x versions - to address several security vulnerabilities, along with enhancements to PDF creation, roaming profile workflows, and other bug fixes (  are available in PDF form). The two patched security flaws include a crashing exploit that could allow a remote attacker to take control of your Mac.
 about Adobe Acrobat/Reader 9.4 and 8.2.5.
TweetDeck 0.35.3 -- Twitter client, based on Adobe AIR, has been bumped to version 0.35.2. The latest fixes and additions to the software don't seem nearly as minuscule as the fractional version number. Various bugs are fixed, including issues affecting scheduled updates, Facebook authorization, retweet issues, and more. New in this version is support for t.co links in main feeds, Twitter trends, universal login (with the creation of a free TweetDeck account), and Posterous image uploading. (A quick 0.35.3 release a few days after 0.35.2 fixes a few outstanding bugs.) (Free, 2.3 MB)
 about TweetDeck 0.35.3.
MenuMeters 1.4 -- Raging Menace has updated to version 1.4 - its first update since January 2006. MenuMeters provides a set of CPU, memory, disk, and network monitoring tools in your Mac's menu bar. The new update offers full compatibility with Mac OS X 10.6 Snow Leopard, hides more inactive statistics when appropriate, and introduces support for IPv6 addresses. The update also fixes a variety of bugs related to setting preferences, managing VPNs, showing disk space, and more; Raging Menace provides . (Free, 880 KB)
 about MenuMeters 1.4.
Growl 1.2.1 -- The Growl Team has released, its software for enabling Mac OS X applications to provide unobtrusive onscreen updates. The update includes a slew of minor fixes, addressing issues like plug-in support, speech notifications, speed and performance problems, and more. The updated GrowlSafari plug-in restores the capability to click "Download finished" notifications to reveal the just-downloaded file, and the updated GrowlTunes plug-in now works better under Mac OS X 10.6 Snow Leopard. For even more detail, read . (Free, 6.1 MB)
 about Growl 1.2.1.