Imac keeps losing internet connection?

[Lewb]

Hello, can someone help the last few days every time i restart or when ever my imac goes into stand by when it wakes up the internet is not working untill i click "Network diagnostics" im using wired Ethernet but to get it working again i have to choose wifi then select a wireless network to join then it suddenly says "Your internet connection appears to be working correctly" (Using wired) Any ideas how i can fix this its only started doing it recently and i dont think its had any updates im using Mac os x lion 10.7.4 Thanks in advanced.

 

[Puevlo]

This is very strange. I have seen this before with wireless ethernet but not wired ethernet. I would suggest creating a new network location from within the Network pane of System Preferences. You could also try deleting the /Library/Preferences/SystemConfiguration folder, which contains all your network settings, and restarting the iMac.

 

[Lewb]

Thanks for the help just tried that and it seems to be working atm hopefully it will stay that way