It has been for quite for a while. Today Apple released Mac OS update. The size of the update is about 729.6MB.Update: on the same day, I got another notification of update of Safari 5.1.7. What a busy day. I downloaded the update. One thing interesting, Adobe's Flash notified my its out-of-date and requested me to update during my Safari update. That package is about 10MB. Here I added the snapshot of Safari update and space calculation.
The following is the comparison of spaces used before and after of the updates:
| Command: df -lak | Used(Kilobytes in 1024-blocks) | 
|---|---|
| Before | ...285,368 | 
| After | ...398,104 | 
| After Safari | ...464,960 | 
| Difference (A-B) | 112,736 | 
| Difference (AS-A) | 66,856 | 
Actually, it turned out that it was Apple disabled old Flash during the update. Adobe security chief appraised Apple to keep Mac users with updated Flash.
References
- AppleInsider News: Apple's latest Lion update continues preparations for Retina display Macs
 - AppleInsider News: Apple decision to disable old Flash Versions lauded by Adobe security chief
 
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