A small problme that I had was the names of the various JBoss download files.
The list gives no indication just which files pertain to which platforms.
I guessed the "zip" was for Windows, but because the list required me to guess I mistakenly downloaded the RC file, I failed to even notice the proper 4.0.2 version (it was at the bottom of the list).
This basically caused me to waste a few hours as I chased an inconsisetncy between the doc and code!!
How about taking steps to clearly label wihich download files are for which platforms, or better still have seperate areas for platform specific downloads?
Have a look at: -
The rest of the extension just tells you the compression used, you just need to pick one that can be used with the compression tools you have available to you.