updated 12:25 pm EDT, Fri June 6, 2008
Mozilla & Mac OS X 10.5.3
A variety of Mozilla-based applications are triggering serious errors following Apple's Mac OS X 10.5.3 update, scattered reports indicate. Users are indicating that programs such as Firefox, Camino, Songbird and others are now spawning crashes and lock-ups, "zombie" processes, and an inability to shut down a Mac without using the power button. Mozilla is currently tracking the issue, but as of press time has not assigned a priority to the item, nor an estimated time for a solution.
The problem does not appear to be limited to Mozilla software however, as more general shutdown problems are currently being discussed on Apple's support forums. In most or all cases it appears that users are left staring at the "loop," the same loading symbol that appears when first loading Mac OS X.
A number of homemspun fixes have been suggested, including the removal of things like Qmaster services, or anti-virus login items. Less dramatic options may include fixing permissions on the boot drive, or removing USB and FireWire devices one-by-one.