Safari can't connect to internet after upgrading to yosemite

I just updated my early 2009 iMac to Yosemite from the latest version of Mavericks and now Safari, Mail, and Software Update can't connect to the internet but Chrome can (that's how I'm asking this). My internet connection is working, just not for Apple applications. Any ideas on how to fix this?

I expect to face the same problem at my (late 2013 model) MacBook Pro Retina running WIFI only. Safari doesn't open any web-side and App Store is dead too.
Trying following tip:
Try entering these commands in terminal.
sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.discoveryd.plist
sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.discoveryd.plist
IT fixes it for me, as long as you don't restart.
, it works for the moment, and just as mentioned, after restart it's gone and Safari doesn't work again.
However, I was trying to switch off WIFI and connecting the MBP to a LAN network. After a while, a very long while, Safari and App Store were running. After that I was trying to adjust WIFI and Fire wall seeing via System Preferences, without any success.
Google Chrome is running without such problems on my machine ...

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Faulting Application Path: C:\Program Files (x86)\Safari\Safari.exe
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Problem Event Name: BEX
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Fault Module Name: StackHash_7100
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 00000000
Exception Offset: 7d3a1240
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Additional Information 1: 7100
Additional Information 2: 710027e7a8d30022e5e0ee529f40121f
Additional Information 3: 5158
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