For anyone who is still having this issue. I need to know the following:

Browser that is being used
Does the browser have popups enabled, do you have any plugins working in the background

Do your classes have any special character? (Non alphanumeric)

Also need to know what console you are playing on.

same problem for me too.  it also freezes sometimes when i quit a lobby.

i used google chrome and IE

i don't have any popups or plugins in background or enabled

yes, i have a equal sign for one of my classes

i play on ps3

same for me as well, i have a few things unlocked that show as not yet available in my list when editing loadouts. i make all my changes, then it gets stuck at sending changes to game.

Thanks for keeping us updated!

For those who mentioned that they have special characters in their custom class names (+, -, @, $, etc); You will want to change your custom class names so they do not include these characters. This can have a negative response with some of the functions within ELITE.

IM FUKING OVER THIS