Slow Script: Safari no longer responds...script issue.

This is almost certainly down to the web page you are visiting at the time. Scripts often run slow if they are too long, full of useless bloat, or the server on which the script resides is having issues.

Make sure you are running the latest safari, and also try with either opera or firefox too. sometimes they handle scripts differently.

I thought so too, and then my wife's computer started doing the same thing -- on multiple sites. If it weren't a Mac (MacBook running 10.5.8 and Safari 5.0.6), I'd swear it was a virus or other malware.

Now executing XKCD tech support loop (http://xkcd.com/627/)...

I've been getting the same error from Safari for several weeks now. What I find "interesting" is that there's usually no visible time lag betweenwhen I click on something and when the erro pops up. So it seems that "slow script" means a script that doesn't respond within 1/10 of a second or so. I got several such errors when I signed in and replied here. The sign-in script got the error instantly when I clicked on the "sign in" link. The same instant error popped up when I hit the "Reply" link.

I wonder if there's somewhere that I can set the script timeout interval. It really should be longer than a (fraction of) a second.

I also got "slow script" while typing this, when I decided to move a phrase with copy-and paste. When I hit CMD-C, the error popped up. I also got one when I hit a backspace. Again, both were instantaneous.

Look at the top line on your Safar Bowser, does it read: Safari File Edit View History Bookmarks Develop Window Help? You are interested in the "Develop" tab. If it is not there, open a terminal window (in your "spotlight/finder" in the upper right. Just type "terminal") Open it, then cut and paste this into it:

defaults write com.apple.Safari IncludeDebugMenu 1

then close the terminal, close Safari and restart it. Now, you'll have the "Develop" tab. Open that tab and select "Disable Runaway JavaScript Timer".

-all done!