Suddenly last night my internet connection dropped for about twenty minutes and then started to work again for no apparent reason. It did this a couple more times and continued to do so this morning and is currently refusing to work at all. The computer is connected to the wireless network. I am currently using it with a network cable plugged in. The strange thing is that on a computer running 10.5.6 it works perfectly. Does anyone have any suggestions? Thank you very much.