Duplicate Files Searcher

I pointed the app at my 80+ GB home directory. Not unsurprisingly, it could
not quite deal with that. :-) However, the GUI was just hanging after it
had run for about an hour and all I could do was kill the application. It
would be nice if that situation was handled more gracefully. Here is the
stack trace I found in the console:

13.6.2009 00:55:21 [0x0-0x88088].com.apple.JarLauncher[929] Exception in
thread "Thread-7" java.lang.OutOfMemoryError: Java heap space
13.6.2009 00:55:21 [0x0-0x88088].com.apple.JarLauncher[929] at
java.util.Arrays.copyOf(Arrays.java:2882)
13.6.2009 00:55:21 [0x0-0x88088].com.apple.JarLauncher[929] at
java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:1
00)
13.6.2009 00:55:21 [0x0-0x88088].com.apple.JarLauncher[929] at
java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:572)
13.6.2009 00:55:21 [0x0-0x88088].com.apple.JarLauncher[929] at
java.lang.StringBuilder.append(StringBuilder.java:203)
13.6.2009 00:55:21 [0x0-0x88088].com.apple.JarLauncher[929] at
java.io.UnixFileSystem.resolve(UnixFileSystem.java:93)
13.6.2009 00:55:21 [0x0-0x88088].com.apple.JarLauncher[929] at
java.io.File.<init>(File.java:207)
13.6.2009 00:55:21 [0x0-0x88088].com.apple.JarLauncher[929] at
java.io.File.listFiles(File.java:1056)
13.6.2009 00:55:21 [0x0-0x88088].com.apple.JarLauncher[929] at
duplicatefilessearcherfull.av.c(Unknown Source)
13.6.2009 00:55:21 [0x0-0x88088].com.apple.JarLauncher[929] at
duplicatefilessearcherfull.av.run(Unknown Source)