Combo Update Process Safe to Install 10.6.5

PGP have confirmed that Apple’s automated software update process causes the boot problem with PGP WDE. The combo update process however does not cause any problem. Engineers identified that a small change in the way that the software update removes the crucial boot file implemented by PGP.

PGP confirm that they “always perform extensive testing on all Apple pre-release OS X builds and none of these tests with the 10.6.5 update exhibited the conflict that some customers have experienced. However, we identified after the release of the upgrade that, unlike the pre-release update process, Apple’s automated Software Update mechanism bypasses the protections PGP® WDE engineering team has put around a critical file needed for normal system startup.”

The full and safe combo update can be downloaded from


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