Mark Allan has released ClamXav 2.6, which updates the ClamAV engine to version 0.98. ClamXav, Sentry, and the ClamAV engine are now 32/64-bit, and ClamXav now requires Mac OS X 10.6 Snow Leopard and an Intel processor. The release also adds compatibility with Notification Center on 10.8 Mountain Lion for ClamXav (but not Sentry), fixes issues with unnecessary reporting of quarantine folders and updated virus definitions, adds a timestamp to logs of scheduled scans, and makes improvements to the French, Italian, and Czech localizations. Shortly after the 2.6 release, 2.6.1 was released with a fix for 32-bit machines running Snow Leopard. (Free, 19.8 MB, release notes)
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.