Hi, I have a older White MacBook 4.1 Early 2008. It's the 2.1Ghz Intel Core 2 Duo with the Intel X3100 144MB card. The MacBook has kernel panics on a frequent basis. I have already replaced the RAM (now 4GB) and the hard drive (250GB). It also has a new topcase. These are all new components. The other thing I did is doing a clean install of Lion. The MacBook seems to be working fine when I use it, but it kernel panics 75% of the time when it wakes from sleep. On occasion, I also kernel panics when for example I'm switching from dashboard back to the desktop or something. Does anyone have any idea? It does not run too hot and I have already run geekbench or cinebench in order to test the system for failures. It passes them flawlessly. I just has kernel panics pretty often out of the blue.