In a generic way, I suppose it does. Can you point me to specific data about why 1.5 and 1.6 are so very advantageous that using them is worth cutting off large numbers of potential users? I've been programming for decades but don't Java jive.

A quick note to your original problem since I just looked through 2.8.10 code.

Your problems mainly appear in two places, that is:
phex/host/CaughtHostsContainer.java
diff is here:
SourceForge.net Repository - [phex] Diff of /phex/tags/release-3.0.2.100/src/phex/host/CaughtHostsContainer.java

and
phex/download/swarming/SWDownloadFile.java
phex/common/file/ManagedFile.java
described in the change set:
SourceForge.net Repository - [phex] Revision 3569

It should be possible to backport the stuff to Java 1.4 when you just ignore the Java 5 specific changes.

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Now all I have to do is figure out how to check out the 2.8.10.98 code with svn and get java stuff compiling on this rig. Maybe someday I'll know my way around the program enough to help out. Don't hold your breath. ;-)

You can find infos here:
http://www.phex.org/wiki/index.php/B...rom_Subversion
http://www.phex.org/wiki/index.php/Subversion

Instead of the mentioned path in the wiki the 2.8.10 and 3.0.2 SVN path is:
https://phex.svn.sourceforge.net/svn...ase-2.8.10.98/
https://phex.svn.sourceforge.net/svn...ase-3.0.2.100/

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FWIW, I managed to checkout the 2.8.10.98 version via svn (thanks - svn is new to me as well as java). I have to say that, for Mac OS X at least, the "directions" leave something to be desired, for a clueless newbie anyway. After reading things, I found that I needed "ant". A version of ant comes with Tiger (X.4.?) but apparently not with Panther.

Getting ant compiled and installed is also a process fraught with misdirections to avoid. Panther doesn't seem to like ant 1.7 (the JUnit issue, if nothing else). I have no idea whether I've got it right or not but some manner of compilation of Phex 2.8.10.98 took place. I've yet to check out whether it's what I have in the packaged app I'm using or not. It compiled more quickly than I was expecting it too. Makes me wonder if I'm not doing something really wrong.