Hey all-- I have a 2 GHz Core 2 Duo 13" Macbook 1 GB Ram running Tiger (10.4.11). I have been experiencing sharp increase in a phenomenon that has occurred now and then for the past couple of years--my airport/wifi status flickering on and off and on and off for 30 seconds to a minute. It will drop any downloads, so it is truly losing the connection. During the 'off' flashes, airport fails to see ANY local routers, not just the one I'm on. This has happened on many different ISPs, router brands, locations, and times of day. I can't really identify any sort of relationship to programs/usage. Activity Monitor shows a small increase in the %CPU used by "ConfigId" right before the airport flashes off, almost every single time. I'm not sure what this means, if anything. The problem used to be maybe once a month, so I ignored it. Over the past week or so, it has increased and increased, so that now its like a couple of times per hour. I've rebooted, reopened safari, opened internet connect, etc, and nothing has worked. Also, the length of the episodes have increased, as has the length of each 'off' flash. Also over the past week, I seem to be having huge increases in CPU usage (80-90%) while using safari or firefox, and the fan is almost always running on high if i am using the internet at all. Obviously, data processing is slower as well. I am worried that there is some sort of increasing hardware problem with my airport card, or something up with the CPU that is causing the airport card to overheat and shut off or something. I dread taking the comp to a Genius Bar, since I'm sure it will behave itself while its there.... Thanks in advance for your help!!