For a long time we did have a tool that scanned your harddrive for u2 bootlegs. The purpose of that tool was to sync your 'u2start' collection profile with what you actually have. Quick and easy.
The version online before tonight was Windows-only. Now I have rewritten it to make it work on all major platforms *.
Also we have had an 'export to excel' function for a long time! These 2 tools make it easier to manage your bootleg collection. Quickly see shows you dont have in the Catalogue and see the shows you do have in a nice Excel sheet!
* All platforms that are supported by Oracle Java 1.6, earlier versions of Java may or may not be supported. You can install / update Java at: http://www.java.com/
Works fine under Ubuntu 10.10. I am no Mac expert, but have you updated Java?
To be clear: you have to click 'Scan my pc for bootlegs' on the Catalogue. It is visible when you login, after the click you get the second screenshot.
If the scanner doesn't detect a bootleg that you already have marked, will it delete it from your collection? I don't have every bootleg on my hard disk, I use to burn them to DVDs/CDs and then erase them from my HD...