| If you quit during "optimizing system", then you're fine, just Repair Permissions from Disk Utility to finish the job.
The security updates contain many small files that update applications and system parts. It's not stored in any one place.
In short, nothing to worry about.
__________________ They say if you play a Windows disk backwards, you hear demonic chanting. That's nothing. If you play it forwards, it installs Windows. btw...it's just pronounced "Randy". The 3 is silent. For no good reason. |