Do you want a critical review or not. 
If you are going to keep telling me it's fine ..... where, obviously it's not, then I'll just stop bug hunting and assessing UX and let you do what you like.
It's simply good UX to tell a user that such a thing is possible at a later stage (and thus there's need of a GUI that creates a swapfile)
So set it to Firefox ..... what's your problem there?
Yeah, that has to be set in 'cairo-dock' itself. It's now set to 'synaptic' icon.
