Apple Releases Safari 5.1.2, Fixes Excessive Memory Usage

| Product News

Apple released Safari 5.1.2 on Tuesday, an update that addresses, among other things, the browser’s “excessive memory usage.” It also fixes an issue that could cause webpages to flash white, and adds the ability to display PDFs within Web content.


Safari's Excessive Memory Usage


Apple’s brief patch notes:

This update contains various improvements, including fixes that:

  • Improve stability
  • Address issues that could cause hangs and excessive memory usage
  • Address issues that could cause webpages to flash white
  • Allow PDFs to be displayed within web content

The update is a 40.12MB download and is available through Software Update now. As of this writing, it has not yet shown up on Apple’s Downloads webpage.

A restart is required for the installation.

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Lee Dronick

I don’t know if it really worked or not, may just be in my mind, but I had been disabling caches (under the Develop menu). That seemed to keep help keep the excessive memory use down. Anyway, we will see how this new version works.


I thought Apple claimed 5.1.1 fixed (the horrible) memory mismanagement; anyway, it still sucks and I think Safari is an embarrassment to Apple (I think it also reflects somewhat on Apple’s own Xcode development environment/tools). I guess I’ll try this latest release to see if it sucks less.

I also deeply resent that Flash-disabling has been sabotaged.

What’s so great about Apple?

Lee Dronick

I also deeply resent that Flash-disabling has been sabotaged.

There is a new version of the ClickToFlash extension.


I’m not convinced by any of this.

Ever since installing Lion my machine has taken a trip down the time tunnel and now behaves like a G5.  -  But it’s a good G5.


I had horrible problems with Safari hanging, slowing my system down from the time Lion came out until recently when I trashed safari preferences. Now things are good. I guess I’m hoping this update will keep the problem from coming back.


I also deeply resent that Flash-disabling has been sabotaged.

I updated and Click-to-Flash still works normally.


The update does not seem to have made any significant difference to memory usage.

Bryan Chaffin

That’s my observation, too, LW. I also still get some individual pages “white flashing,” though I have (so far) been spared the delightful experience of having all 100 tabs/windows flashing at once.

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