So many crashes today– kernel panic, no-turning-back, unrelenting crashes. Thought I might upgrade the system, install a new one in hopes of fixing, but the OS 10.5 that came with my macbook claimed it could not be installed on this machine.It’s especially frustrating because, of course, I’m in the middle of several deadlines. To remove everything from the machine– return it to its factory settings and then load everything back– would take all day! Woe and tremors–