Hello, Help please..! My Macbook [May 2006 version] is running Leopard 10.5.5 Having left it on overnight compacting a parallels instance & doing a Time Capsule backup... It now refuses to start-up.. Just before starting these, I changed the permissions on the Hard disk with the group 'everyone' being changed from read only to no access, not sure if this is important.. I was trying to be more secure..! It gets past the grey screen, but gets stuck on the blue screen.. It cycles with the wheel turning, this then stops for a second & then returns.. It will not go to the login screen.. I have booted from the Leopard Disk & checked the HD, it says the disk is ok, but there is an error on the permissions.. Can anyone make any suggestions.. Regards Charles..