I've messed up my MacBook and it's now running really slowly (even just clicking on icons, going into folders and suchlike) and I need to find out the best way to sort out the following issue: I wanted to back up my pictures and (now realise, foolishly) moved them from iPhoto to my desktop so I could transfer it to an external hard drive. It was hanging and had the spinning beachball. This was 7 days ago; it looks like it's done it and is now running very slowly, I know it's lagging because the clocks shows it is sometimes 10 minutes slow and it's whirring and doing something. I had unplugged the hard drive in case it was slow due to that and from researching other forums for advice I have been able to check the Activity Monitor - the CPU is fine but the disk space is almost zilch (all blue and no green). I now want to delete the pics off my desktop as I'm sure this is the root of the problem. Is there a simple/easy way or do I really have to be patient, delete and trash them one by one? As you can tell I am not a full on techie but understand simple instruction, so please if you can help me resolve this, I'd be very grateful.