iMac (late 2009) been playing up a bit lately, mouse clicks failing to work either by Magic Mouse or USB version. A pram and smc reset fixes but really annoying. Plus the screen has dark blotches and marks at the top. Cut long story short apple are sending someone out to collect and repair machine and replace screen at the same time. Just wondering if anyone has used service. If so what advice would you give I have a time machine backup is that enough or should I take my personal docs off the mac?