Safari DNS problem in Yosemite? Works, then slow death...

I just started having this problem with both Safari and Firefox on two Macs; it's been going on for the past week or so... In my case I am running Mavericks 10.9.5. I've tried all the suggestions except yours. I'm going to change my Network prefs on one Mac and see if that does the trick. I'll return to this thread if the suggestion does not work.

Well that didn't take long... When I tried ron2you's suggestion I lost my Internet connection. I had to go back to my original setting and restart the computer before I could get back online.

Same issue here!

Funny thing here is: On my homenetwork everything just works fine on my Macbook Pro 17" (Yosemite 10.10)

When I move to my office safari doesn't open any google website any more.

Tryed every tip from above - nothing helped.

waiting for a fix from apple!

Same problem. Tried all the fixes. Nothing makes any difference. My $150 chrome book works better than my $4000 Mac Pro!

Thanks, worked for me!

Thanks for the suggestion of removing ipv6, as safari now works normally. 🙂

I am having this same issue and it is maddening. Using OpenDNS did help for some sites, but the issue still happens to me.

I'm wondering why this is not an issue in Chrome and Firefox? Any guesses?

Thanks!

This worked for me! Kill the IPv 6.

I am finally typing this in Safari having had problems for the third or fourth time since installing Yosemite. Firefox and Mail always worked so there was no problem with the internet connection. MacBook Pro retina 13'. But Safari having worked fine for several days, would suddenly stop loading pages including existing open ones. Previously the problem seemed to solve itself after a day or two and a restart (with me being forced to do use Firefox during this time). Thanks to the posts above I emptied and deleted Safari's cache and also disabled IP6. Then, but only after a restart, Safari works again. Another wasted hour...

Apple, there is an issue here - we should not have to go through hoops like this! And we do not want to be forced to use a different browser.

Problem happened AGAIN today for me after computer sleep. This time fixed simply by turning Wi-Fi off then on again. Interested to see if that helps others!

I too seem to be having issues on my 2012 Mac Mini running Yosemite. I've cleared all Safari Settings, changed DNS servers, updated my routers firmware, reset my router, repaired permissions, all to no avail. I believe this is a larger issue than Just Safari and somehow tied to the OS.

Found this very old support article from Apple that was recently revised this year. You may want to try and disable DNS prefetching as described in the article. So far it seems to have worked.

Safari 5.0.1 or later: Slow or partial webpage loading, or webpage cannot be found - Apple Support

I've been having the same problem. I thought it was DNS at first.

However, after disabling (uninstalling) K9 filtering software, Safari started working as fast as it ever did. It's pretty smoking now.

I have installed the latest beta on my test drive and safari doesn't seem to be experiencing the problem. Ipv6 is enabled, so maybe 10.10.1 fixes the issue.

It worked for me. Thanks :-)