Could the iTunes suggested fixes (i.e. DNS flush) CAUSE connectivity issues

I too have recently downloaded the latest version of iTunes and tried unsuccessfully to connect to the iTunes store via my iPod Touch. iTunes even tried to update the latest iPod software but couldn't connect. But here is the my real concern, I tried all of the fixes suggested by iTunes/Apple with no success, however, since these "fixes", my other programs that have worked fine just prior to these "fixes" suddenly don't recognize an internet connection either. I tried to do a Java update...couldn't connect. I downloaded a new game from Gamehouse and tried to login to FunPass (as always)...couldn't connect, however, any game downloaded prior to yesterday's "fixes"...there is no problem connecting. I even yelled at AT&T Yahoo support thinking they were the problem (recent issue with their Protection Suite). Finally, I purchased, downloaded, and ran a new antivirus program thinking a possible virus or malware or adware or something...found & fixed stuff (mostly spyware), but it can't update or finish registering because it also thinks there isn't a connection. Could flushing the DNS (as suggested) cause connectivity problems with my other programs?? Or, any suggestions?? I am desperate

Flushing the DNS entries shouldn't be a problem, as they should just get rebuilt.
DNS stands for Domain Name System, it's just an "address" for all the different computers connected to the internet to find each other.
Here is a good explanation on that process:
+When a computer visits a website for the first time, it stores the website's DNS information in cache. The next time the computer visits a website, it looks in the cache to see if the website's information is present to use. This can cause problems if the website's DNS information has changed since the computer's last visit. Flushing the cache removes all the information stored in cache, forcing the computer to find the new DNS information for the website.+
Message was edited by: Katrina S.

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