Basically, I hadn't used my MBP in a couple of days and it was sitting there in sleep mode and I thought nothing was wrong but I came to use it today and it had frozen so I restarted it only to have a flashing folder with a question mark appear. I Googled around a bit and I thought that a quick repair disk in Disk Utility would fix it as it has for others but when I tried that I get this error: Code: Invalid B-tree node size. Volume check failed. Error: Filesystem verify or repair failed. This is a mid '09 Macbook Pro (specs in sig) so something going wrong with it was the last thing I expected, especially the hard drive. Does anyone know what can be done or am I pretty screwed? Cheers.