In the last few days when I open up a browser it says its not connected to the internet. I can't ping google for example but my wireless connection is fine and the Airport Base Station has a green light. When I open Safari it complains I'm not on the internet so I click the Network Diagnostics button which pops up, shows 2 red icons showing I'm not on the internet, asks me what wireless connection I want and then all of a sudden the icons go green and says my settings have changed and I'm good to go. Why would it suddenly start doing this? The only thing I can think of is the fact I did a software update.