Hi Ronni Thanks for your explanation.
> Many browsers come with add-on features. Firefox, Chrome, Internet Explorer, > Safari have add-on facility. In Chrome and Safari an add-on is known as > extension. There is no difference between add-on and extension. Both are the > same terms used differently in different browsers. The Apple support article is not clear. Quote: "Note: This article does not apply to Internet Plug-Ins such as QuickTime, Java and Adobe Flash. It also does not apply to Safari Extensions." I have one Extension installed (1Password) which is NOT installed in one of the Libraries mentioned in the Apple article where dubious add-ons may be located. That's why I ask Ronni and WAMUG to explain things! And it brings 1Password up the suspicion list for testing. I was careful to say that Safari unexpectedly quits. It does not crash. There are no crash reports - there are not even events in the Console log. I am still observing and gathering data. Mail (or Notifications) is my current suspect. Here is the story to date: The strange behaviour started when Mountain Lion was installed. I normally have the following apps "active" in the Dock with just the white "led" indicator showing: Finder, Mail, Safari, iTunes, EyeTV, and (in recent weeks) Console. I always work with the minimum number of programs with open windows on the desktop. To quit an active app with an open window I click on its red "traffic light". My understanding is that if it is a "single window" program it will quit completely and not display a Dock "led". If it is a multi-window program (e.g. Safari), the window will close but the Dock "led" will continue to display (and the app be ready for background activity). Safari does not quit when I'm using it. I finish my internet work, "red light" it, and do other things. I come back to use Safari and notice the Dock "led" in not showing (sometimes). Safari has completely quit all by itself. Sometimes Safari is active when I leave the iMac to go to sleep, but has quitted when I re-awaken the computer (or does so shortly afterwards). This is irregular behaviour so I make a diary entry of conditions when I leave the Mac to go to sleep, and try and keep an eye on it while the Mac is in use. (I am also logging the behaviour of Apple TV and EyeTV, so I have some routine to note the condition of devices, apps, and Console messages.) There seems to be an association between the arrival of new email and the extinguishing of the Safari led. I have Notifications turned on, but only receive email and software update messages. Not much traffic, hence it takes a long time to find patterns in Safari behaviours. If there is a new email in Mail that arrived during the "go to sleep" period, the Safari led is off when awakened. If new mail downloads after iMac has been asleep (Mail is set for a 5 minute new message check cycle) then the Safari led goes off when the batch of emails first hits the Notification display. But I am still logging these events, so the pattern may be coincidence - - -. Turning off Safari Extensions and unchecking Plug-ins will be the next exercise, but add more variables. I intend to do these when I can establish a more stable Safari quitting scenario, so I can be sure of the results. I also need to determine the function of each Plug-in. In late November I re-installed OSX 10.8.2 (combo update version) plus supp. Also installed a new Netgear modem/router. Then applied iTunes 11 and ATV 5.1.1. So the iMac has been carefully shut down, backed up, permissioned, and patted on the head a fair bit recently. The bad behaviour still exists! (Except perhaps the Apple TV sleep/wake issue may have been fixed with 5.1.1 - - - fingers crossed - - - but that's another story.) You may recall I anguished over setting Computer Sleep to Never. I since tried various combinations of sleep time, including Never. Since the reinstallation of the Combo Update, I set the Energy preferences to Default (10 minutes for both computer and display). I feel this setting has given the most stable performance for a long while. Current software versions in use are OSX 10.8.2, Safari 6.0.2 and Mail 6.2. Cheers Alan On 03/12/2012, at 3:19 PM, Ronni Brown <[email protected]> wrote: > Hi Alan, > > Plug-In is a complete program and add-on is not a program. > For example Flash is an plug-in which is a complete program. Flash player is > required to play a video which is made by Adobe. > Also Java is a plug-in made by Sun Microsystem which is used to run programs > based on Java. > Plug-in is not bounded for browsers only. Flash can be installed in computers > to play flash files. > Similarly Java can be installed to run Java files. > > On the other hand Add-On is not a complete program. It is used to add a > particular functionality to a browser. > > Many browsers come with add-on features. Firefox, Chrome, Internet Explorer, > Safari have add-on facility. In Chrome and Safari an add-on is known as > extension. There is no difference between add-on and extension. Both are the > same terms used differently in different browsers. > > Why do you think Mail could be causing Safari to crash/quit? > > When Safari crashes have you viewed the Diagnostic Report in Console to try > to find a clue as to why it crashed? > After Safari crashes a diagnostic report log with the name followed by > ".crash" is saved in ~/Library/Logs/DiagnosticReports folder. > The easiest way to view these reports is to open Applications > Utilities > > Console application, and then click the 'Show Log list' button in the > toolbar. The diagnostic reports are chronologically listed in the Diagnostic > and Usage Information section. > Most of what you see won't mean much to you, but you can find which files > were being used by Safari at the time. One of the reported files could be the > source of the problem due to corruption. > > Cheers, > Ronni > > 17" MacBook Pro 2.3GHz Quad-Core i7 “Thunderbolt" > 2.3GHz / 8GB / 750GB @ 7200rpm HD > > OS X 10.8.2 Mountain Lion > Windows 7 Ultimate (under sufferance) > > On 03/12/2012, at 1:16 PM, Alan Smith <[email protected]> wrote: > >> I'm pursuing an issue of Safari unexpectedly quitting. I find the Apple >> support paper confusing. >> >> http://support.apple.com/kb/TS3230 >> >> The article appears to differentiate between Safari Plug-Ins and Add-Ons. >> Are they different things? How can I determine if I have any add-ons >> installed? I can see several plug-ins in the libraries. Advice to "remove >> any unsupported third-party add-ons" is not very helpful. How do I tell if >> third-party add-ons are supported? >> >> As background, my observations of Safari unexpectedly quitting point to Mail >> as the suspect, but I'm being careful and going through the Apple official >> documented support process first. I know that I can disable Safari >> Extensions and Plug-ins via the respective Preferences settings for testing. >> >> Regards, Alan >> >> Alan Smith >> Late 2009 iMac 21.5" Intel Core 2 Duo 3.06GHz 12G RAM - OSX 10.8.2 > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > http://lists.wamug.org.au/pipermail/wamug.org.au-wamug/attachments/20121203/8eb063a6/attachment.htm > > -- The WA Macintosh User Group Mailing List -- > Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> > Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> > Settings & Unsubscribe - > <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug> -------------- next part -------------- An HTML attachment was scrubbed... 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