The Document :
Step 3:
Excluding user generated files (e.g. as a result of creating documents, bookmarks MP3s etc) use
Use <Disk Usage Tool> to check the amount of free storage memory is the same as when testing
RESULT: Amount of free storage memory, before installation vs after uninstall, is within a 100Kb

Wheather The Amount of 100kb include the user generated files or not ??
if it's yes , it is too small for my application , because user will use my application to download audio files . it will be much bigger than 100 kb . so must i delete all all files to pass the symbiansigned ??