Last week's special report on resolving system-wide freezes that occur when Web browsing generated significant response.
To recap, the issue occurs when Web pages suddenly stop loading - sometimes halfway through a page -- applications refuse to launch, then the system becomes completely unresponsive; eventually, the user is left with a spinning cursor and must manually restart the system.
The issue can be linked (in most cases) to a bug in the lookupd component of Mac OS X which handles various networking routines and may have been adversely affected by recent updates including Java 1.3.1 and 1.4.2 release 2. The most straightforward fix is to simply interrupt the network connection (by pulling an Ethernet cable, turning off an AirPort card, cycling network devices [cable, DSL modems, routers]) though we outlined several more permanent and less intrusive solutions in our special report.