If you are one of those who occasionally download stuff from megaupload, chances are that you have already stumbled on the nasty error message stating that your country had no free download slot for the moment.
The issue is, unfortunately, quite common in countries like Mauritius.
Sure, until recently, there was the nifty user agent extension for firefox, which could simulate the megaupload toolbar being installed, and allowed you to download from MU. However, since mid august 07 it seems that megaupload have updated their toolbar, making the user agent switchers kind of useless.
However, there is still a breach. Indeed, the country slot thingie can still be bypassed. Here is how to do it.
Note: These instructions are for Mozilla firefox, but if you know how to use greasemonkey scripts in opera, it will also work. however please note that I do not know how to do it and thus will in no way be able to help you if you are using opera.
Now let`s go 
First thing you`ll need is the greasemonkey firefox extension. if you do not already have it, grab it here.
After the installation, come back here, and download My megaupload user script. You should be prompted to install a user script. You can view the source code if you want.
After installing the script, just go to megaupload.com to initialise the script.
Tadaa, now when you click a megaupload download link, you should normally be able to download your files ^_^
please note that the user agent extension is not required for this to work ^_^
Very special thanks Leo-kun and Mj-chan, without whom i probably wouldn`t have worked this out
Technical info, For the geeks 
So, wondering what is behind this trick? Simple. In fact, the new megaupload toolbar does indeed append something to the browser`s user agent string, but it seems to be just a decoy, as the site does not check the User agent.
One more thing the toolbar does is create two cookies, and these are what the megaupload site searches for. Thus, the solution was to fake those cookies, and this is just what that script above does. Want to take a look at the source? here it is:
// ==UserScript==
// @name Megaupload 2.0
// @include *megaupload*
// ==/UserScript==
function Cookie(name,value,days) {
if (days) {
var date = new Date();
date.setTime(date.getTime()+(days*24*60*60*1000));
var expires = “; expires=”+date.toGMTString();
}
else var expires = “”;
document.cookie = name+”=”+value+expires+”; path=/”;
}
Cookie(’megauploadtoolbar_visibility’, ‘yes’, 7);
Cookie(’megauploadtoolbar_id’, ‘197A9F07D8724E438DEBE1C11EBBE405′, 7);
As you see, the script uses a function to create the the two cookies. this is done on going to megaupload.com (hence the initialisation step above.) Thus, if you do not plan to delete your cookies , after this step you could delete the script and it would still work ^_^
Here you are me friends ^_^ again my greatest thanks to Mj and Leo. And oh, the functions above? lol gnu gpl 2 ^_^ (joking of course… 
)
EDIT:
Thanks to Ahmed-max who gave a solution for opera users so here goes:
- type “about:config” into your address bar
- go to isp
- input ” ‘197A9F07D8724E438DEBE1C11EBBE405′, 7 ” and push save.
This should do the trick. I haven’t tested it though, i will asap 
