I have a white Macbook that is a few years old now (the multi-part body, bought when the unibody aluminium macbooks had just been released) and has generally run perfectly, but I am starting to have problems on startup and was wandering if any of you guys may be able to help... Basically when I turn it on, it starts up fine, loads up OSX, dock and desktop icons, then stops. The mouse/trackpad respond, but clicking on any icons gives no response whatsoever. By holding down the power button I can force it to shutdown, and when I start it again it seems to run fine, allowing me to start applications as normal and opening up any finder windows that were left open when I hit shutdown previously. Any ideas what is wrong? It seems to make no difference whether I shut down all programmes individually beforehand, or just hit shutdown and let it close them itself, but beyond that I am unsure of the cause or solution. Any ideas?