I have a Macbook Air that's about 4 months old, and it's giving me problems connecting to the internet. It goes like this... About two thirds of the time, I select the network I want to connect to, put in the password, it works and I can connect to the internet. No problems. One third of the time, I find the network I want to connect to, put in the password, the password is accepted, the internet icon on my top bar fills in indicating a strong signal, but I can't actually connect to the internet. Any website I go to says that it can't connect because I'm not online. But I'm connected! The password worked! The bars are lit up! Soon after this happens, the (!) icon appears in the top bar on my screen, and it says 'no internet is available'. A quick Google search has indicated that a number of people with Macbook Airs have this problem, but I haven't been able to find a good solution. The networks, routers, etc. I'm using are not mine (I'm currently traveling), so I don't have the ability to change their settings. This happens seemingly at random, in various places in each place I visit... there doesn't seem to be any rhyme or reason to it. Thanks in advance for your help and suggestions!!