Zero Byte files after Rename
I have a new MacBook Air with Lion 10.7 and have copied all of my data over from Windows XP via a WD USB hard drive (formatted FAT32).
I have started renaming the files in the Mac Finder now to tidy them up, typically making them start with a capital letter (eg "mac os hints.rtf" renamed to "Mac os x hints.rtf") and they go to Zero bytes and hence corrupt !!!
What is going on please?
MacBook Air, Mac OS X (10.7)