Here is a crack/trick for Megaupload which stops the message "All download slots... assigned to your country are in use..." from appearing while downloading a file.
UPDATED 13/11/2006. Support Firefox 2. Here is another solution: -Go to address bar and type: about:config -Search for general.useragent.extra.firefox -Double click on it -Change the default text with this:
Firefox/2.0 MEGAUPLOAD 1.0 -Start downloading again without any toolbar
Method 2 (Firefox 1)
What we need: You need only firefox and the User Agent Switcher addon.Install the addon and restart the firefox to take effect.
Now go to Tools-->User Agent Switcher--->Options--->Options
Click User Agents--->Add
Copy and paste this (only black text): Description: MEGAUPLOAD User Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Alexa Toolbar)
Click OK to close the window(s). No go -again- to megaupload's link you got the message "All download slots...". Go to Tools--> User Agent Switcher and select MEGAUPLOAD.
Click reload and the message is gone.