I have tested this URL and it works perfectly fine.
You could also go to http://devzone.Mxit.com/libPurple/downloads/
and then select to download it there.
Please let me know if you guys have any further issues.
As fantastic as i find it that it works perfectly fine for you I feel that it should be slightly more concerning that there are so many of your clients (myself included) that it is not working for regardless of how "perfectly fine" it is working for you. I also find it concerning that the second link you have so proudly posted does not work either and your lack of response to various complaints about this link as well as the prior discussed link is fairly worrying.
Please sort this out in a more efficient and professional manor, I assume that this is a well established business and the contradiction and demeaning of clients complaints is therefore inappropriate, I refer to the following statement which was made: "I have tested this URL and it works perfectly fine".