OSX M.Lion or Yosemite

I have recently purchased a Garmin Sat Nav.

It requires OSX 10.8 or newer to update maps etc.. I have 10.6.8 Snow Leopard.

Should I purchase M.Lion (chargeable) or download Yosemite (free).

Mavericks doesn't appear to be available.

I'm asking In view of the reported problems some forum members have had with Yosemite.

I welcome your opinions.

Thanks

Graham 

In the stokie household Yosemite is SH1T and we wish we had never moved from Maverick. Still can't get some emails to work due to changed protocols on passwords, wifi drops out and the endless beach ball on safari, none of this happened with Maverick and I doubt it would be happening at all if Steve Jobs was still with us 

Seems to me that you may have some kinds of DNS issues. Flushing the DNS cache may or may not resolve your issue, but I think it is worthwhile to try it.

If you want, I can send you some instructions on how to do it, one thing is that you need to be comfortable with the command line on the Mac Terminal.

I think Yosemite is fine, it is much better than the prev Mac OSes in all aspects IMO.

Ken 

Definitely worth a trip to Apple Store for some help. I haven't experienced the e-mail issue though some domains are not considered secure by Apple, it usually just warns and proceeds if you choose not to accept Apple's view. I have found Google Mail and Apple's iCloud mail rock solid - what e-mail domain are you using? 

If you want to clear DNS caches then you just need to copy and paste this in to a terminal window, hit return and enter your password when prompted - it'll tell you when it's done (worth a go) - it's all on one line. 

sudo discoveryutil mdnsflushcache; sudo discoveryutil udnsflushcaches; say flushed

Wat 

Hello Ken

Peter has already answered: a cache is a temporary store of information & so clearing it will not cause any problems. Your Mac will rebuild the caches. Clean up programs generally clear out all kinds of caches & so doing is perfectly safe. 

I would also upgrade to the latest Yosemite release. 

My biggest problem with Apple upgrades was installing them when I used BT Internet. It got stuck at around 800MB. I overcame this by using a cloak (remote proxy). Since changing ISP, this problem vanished. I've never understood why it ocurred. Pre-Mavericks upgrades were never an issue. These odd things are sent to try us & so we don't become complancent that everything just works. 

I hope this solves your mail problem.

All the best, Wat 

Peter, Wat,

I will give it a go but will update 10.10.3 first.

Thanks for your advice,

Ken

Hi Wat,

Before I try this, how do I go back if it does not work or i screw things up?

Some settings can only be changed by the Super User (i.e. the master administration account that is all poweful). An ordinary user can run commands that are usually restricted to the Super User by using the   Super User DO command (sudo) this requires you to enter the Super User password. If you were the one who set up your Mac in the first place then the Super User password and your password will be the same. 

There are command you could run using sudo that would indeed do damage, but the ones we have provided are prefectly safe. The password is the local user one, not your Apple ID password. Do you log on with a password or use automatic login? 

Ken 

Yes that is the password

using sudo will always display the Apple disclaimer ... as Peter says, when you enter a password it will not show anything on the screen so may appear as if it is not doing anything Or accepting what you type. However as soon as you press return the commands should run. As you get no feedback when commands work in the terminal window: I added the say command so it announces it has done. The password is the one you log in with and should have admin rights as it is the one you used to set up the Mac. I have also pasted in some notes regarding a gmail quirk I'm aware of. However, if not using gmail then this is irrelevant. I use gmail and iCloud mail and luckily everything just worked. I use the Apple mail app on my Mac and sync my mail to my iPad and iPhone through iCloud. 

I would echo Peter's comments that the guys in the Apple store are very helpful and will help setup mail if you still have issues. Sometimes it is easier to fix these things sitting at the Mac in question. It does seem to me that this is an issue with Yosemite and your mail provider as you and your wife have a similar issue on different Macs. Which mail provider do you use? I'm only familiar with Apple (iCloud), Google (gmail) and BT (btinternet). I've got all of them working: though am phasing out my use of BT services, as I wish to rationalise and only have two accounts (one acts as the emergency recovery for the other). 

all the best, Wat 

<code>> sudo <commands>

WARNING:Improper use of the sudo command could
 lead to data loss or the deletion of important system files.
Please double-check your typing when using sudo.
Type"man sudo"for more information.
To proceed, enter your password, or type Ctrl-C to abort.

Password:

</code>

There were odd problems with gmail that can be solved as
 follows (it takes a few hours to rebuild gmail)

• Open email client app on your Mac computer.

• Log into Gmail in your web browser, not in the app.

• Look for a button on the right top corner of your Gmail that looks like a gear and click on it. Then click on Settings.

• Click on the choice for Labels.

• Deactivate Show in IMAP as well as All Mail and then return to your inbox to save settings.

• Now, close the mail client app you have open for Mac.

• Go to preferences on your Mac computer and choose Internet accounts. Delete all Gmail accounts now.

• Go back to your Gmail account, to the settings as described in steps three through five.

• This time, reactivate Show in IMAP and All Mail.

• Now, reopen your Mac mail client.

• Go once again to Preferences and choose Internet accounts as you did in step seven.

• Add back your Gmail accounts now.

Ken 

Definitely worth a trip to Apple Store for some help. I haven't experienced the e-mail issue though some domains are not considered secure by Apple, it usually just warns and proceeds if you choose not to accept Apple's view. I have found Google Mail and Apple's iCloud mail rock solid - what e-mail domain are you using? 

If you want to clear DNS caches then you just need to copy and paste this in to a terminal window, hit return and enter your password when prompted - it'll tell you when it's done (worth a go) - it's all on one line. 

sudo discoveryutil mdnsflushcache; sudo discoveryutil udnsflushcaches; say flushed

Wat 

Wat,

I have tried it again and typed in my password as advised but nothing happens.

Ken

Wat

Just tried it yet again, now I do not get the option to enter my password?

Ken

Ah, since you just mentioned Plusnet email account, now I understood your issue - it  is a very well known one due to an out-dated Plusnet way of doing things, and there is a fix for it, please read this discussion on how to fix it (https://discussions.apple.com/...tart=30&tstart=0). Basically I think this is what the guy did to resolve his problem:

"Quit mail

Open up Finder

In the Finder menu bar select Go > Go to folder

type in ~/Library and click Go (on my keyboard the "~" is next to the left shift key)

Open the folder Mail

Open the folder V2

Open the folder MailData

Double click to open Accounts.plist (should open in TextEdit)

Find the block of data that contains the offending mail account

Find the line within this block that says UserAllowsInsecureAuthentication

Change the line below this from to false to true

Quit TextEdit

Restart mail"