Kongregate test 2:
Browser Used: Chrome (On same desktop PC as previous result)
Much better results; the game loaded fine, and the sound effects were all there. The Ad Choice advert was still there throughout, obscuring the game and ruining the experience; if there's any way of moving this, or perhaps having it only appear on menu screens etc then this would be a wise choice (I realise that ads are the only way to make money on many of these social gaming networks, but if it puts people off the game and makes them rate it lower then it probably won't make you much money anyway as no one will ever play it).
One other text related issue I discovered; if you dock with the space station and have all the commodities text up, when you click the missions button the text comes up white and is almost completely obscured by the other text (most other menu options come with a text box that helps make the text stand out).
Also, I'm guessing some sort of Auto Save feature is in operation? As there's a load button and no save button, it might be worth changing 'Quit' to 'Save and Quit' so that players are more aware they can continue where they left off.
Anyway, I will try and test the game on Firefox at home, though it probably won't be until tomorrow (I'm sure you already have plenty to digest!)