Apple has released Security Update 2014-002 for 10.8 Mountain Lion, 10.7 Lion, and 10.7 Lion Server, with many of the same security fixes applied to the recently released OS X 10.9.4 Mavericks (see “OS X 10.9.4 Includes Wi-Fi, Wake from Sleep Fixes,” 30 June 2014). All three releases receive updates to the certificate trust policy, as well as fixes for vulnerabilities in maliciously crafted ZIP files, cURL re-using NTLM connections, and the Dock’s handling of messages from applications. The Mountain Lion Security Update also patches vulnerabilities related to a kernel memory issue with graphics drivers, a validation issue in the handling of OpenCL API calls, and array indexing with IOAcceleratorFamily (see the full list of patched vulnerabilities). (All updates are free. For 10.8 Mountain Lion, 139.3 MB; for 10.7 Lion, 134 MB; for 10.7 Lion Server, 184.3 MB.)
Syslogd Overwhelming Your Computer?
If your Leopard (Mac OS X 10.5) system is unexpectedly sluggish, logging might be the culprit. Run Activity Monitor (Applications/Utilities/ folder), and click the CPU column twice to get it to show most to least activity. If syslogd is at the top of the list, there's a fix. Syslogd tracks informational messages produced by software and writes them to the asl.db, a file in your Unix /var/log/ directory. It's a known problem that syslogd can run amok. There's a fix: deleting the asl.db file.
Launch Terminal (from the same Utilities folder), and enter these commands exactly as written, entering your administrative password when prompted:
sudo launchctl stop com.apple.syslogd
sudo rm /var/log/asl.db
sudo launchctl start com.apple.syslogd
Your system should settle down to normal. For more information, follow the link.