Safari 5.0.3 issues?

To make a long story short, Safari has been good to me for the most part ever since I started using Macs. No major issues.

Just now I tried to quit it. At the time it was using ~500 MB physical memory. As soon as I hit the quit button, it beachballed and my whole machine slowed down to a crawl as the "not responding" application used massive amounts of CPU (it was registering at more than 200%, and I only have two cores (!) ).

Fortunately I was finally able to kill it from terminal. This is literally the first time Safari has done something like this to me. Any ideas on what might have caused it? The only major change recently was the 10.6.5 update.

wrldwzrd89 said:

When things like this happen, the first thing an experienced user does is read log files from just before the event of interest. In Mac OS X this is done from the Console application, in Applications -> Utilities. It also helps to filter the logs to show only events from the relevant application, in this case Safari. To do that with Console, just type Safari in the search for box.

Click to expand...

**repeated about 50 times**


**both repeated several times**

And when I terminated it:


I terminated a minute or so after it hung up. I guess the connections between the previous messages and the hang up aren't obvious to me.

I trashed the plist and reset Safari. All seems well. Thanks!