I got a new macbook (alu) and since I once happened to overwrite a file because the default file system for OS X is case-insensitive, I thought I would be smart in reformatting the hard-disk before installing anything and changing the partition to case-sensitive (use DiskUtility to do so just after booting from the Leopard cd).
Unfortunately, it proved to be a bad choice since many applications are not written for a case-sensitive filesystem (see Adobe Photoshop Elements, f.i.). That pissed me off! Probably an ordinary Mac user will have an happy life with a case-insensitive fs but since I have a linux background it seems very unnatural to me.
Nevermind, I tried to find a way to convert my fs to case-insensitive without having to reinstall everything. I first tried restoring with a TimeMachine backup, after having reformatted the disk case-insensitive but the backup restored the whole partition as case-sensitive.
The solution seemed to be to fully reinstall OS-X from scratch and when it prompts for restoring data from TimeMachine choose all options and do a restore (You can also do this though Migration Assistant).
Now I'm "happily" back to a case-insensitive filesystem and can install my Photoshop....sigh