Recently I've been noticing some issues with my MBP 2.4 (Leopard 10.5.2). The computer has been running quite hot recently and the fan has been going full tilt to compensate. I thought it would go away after awhile, since it's got to be a background program using the processor. All of the sudden I get this kernel panic and it asks me to reboot. Weird...I was just using iTunes and iChat. So I started looking around. I downloaded Temperature Monitor and noticed that my processor is fluctuating between 71 and 98 degrees. I checked the Activity monitor to see what was causing this spike in CPU usage. Couldn't find anything, but the CPU usage is at roughly 100% and switches between cores. I'm starting to get worried. All i did recently was install Office 2008. That could be it, but I don't find any 2008 processes. Worried that this might be a hardware problem, I restarted into boot camp to make sure that it's not a CPU issue. No problem. The CPU fan calms down and the CPU usage is down to 2%. One other note is that, in the past, i've noticed that the computer jerks a fraction of a second when opening a grid stack while under "Better Power Savings." It doesn't do this when it's on "Better Performance." Makes sense. However, it doesn't matter right now whether I have it on either setting, because the stack comes up perfectly, indicating to me that there may be something wrong with power management..... Any thoughts?