Apple updates Lion, patches 51 bugs in Mac OS X

But some users report every app crashes after 10.7.3 is installed

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Mac OS X 10.7.3, the third update since Apple shipped Lion in July 2011, also included non-security fixes and changes that handled bugs in Wi-Fi -- Apple said it had taken care of one where the wireless connection wouldn't re-establish after bringing a Mac out of sleep mode -- and made several improvements to the OS's integration with Windows Server's Active Directory, which oversees authentication on enterprise networks.

Apple has issued fixes for bugs in Lion's Wi-Fi functionality before, notably in Mac OS X 10.7's first update last August.

The upgrade to Snow Leopard was a security-only update identified as 2012-001.

As part of the Lion and Snow Leopard updates, Apple bumped Safari to version 5.1.3.

Some Mac owners, however, were very unhappy with what happened to their machines after the Lion update.

"Just updated to 10.7.3 and everything crashes," said someone identified as "albert421" in a message Wednesday that kicked off a long thread. "All apps all windows will just pop out error with CUI CUI CUI CUI."

Others chimed in with similar reports, with some saying that they had successfully recovered by restoring a Time Machine backup, using Lion's recovery partition or reinstalling Mac OS X.

One tipster suggested that frustrated users download and install the Combo update -- a much larger file -- if they could boot their Mac in "safe mode" by pressing the Shift key as the machine starts.

The "CUI" thread has grown to nearly 130 messages since yesterday, and has been viewed nearly 9,000 times.

Mac OS X 10.7.3 and the separate 2012-001 security update for Snow Leopard can be downloaded at the Apple site or installed using the operating system's built-in update service.

Apple has stopped issuing updates to Mac OS X 10.5, aka Leopard.

According to Web metrics company Net Applications, Lion powered 34%, or just over a third, of all Macs that went online last month. Leopard accounted for 15% of all Macs.

Gregg Keizer covers Microsoft, security issues, Apple, Web browsers and general technology breaking news for Computerworld. Follow Gregg on Twitter at @gkeizer, on Google+ or subscribe to Gregg's RSS feed . His e-mail address is gkeizer@computerworld.com.

See more articles by Gregg Keizer.

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Copyright © 2012 IDG Communications, Inc.

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