Iceland Volcano = New Roomates?

If you've been keeping up with current events, you probably noticed the huge erupting volcano in Iceland.


So, how is this vocano affecting my daily life? Well, my boyfriend lives with a roomate who is a 30 yr-old Czech guy, a cool dude. Lately, we've had two more people living with us at the moment. They're the roomate's best friend since childhood with a girlfriend.
Apparently the ash from the volcano has caused airlines to shut down all aero-transporation over Europe. Damn wind blew it there and our new roomates are stranded in New York for the time being.

Why is this "ash" so dangerous for planes? I found a nifty little diagram to explain it all:

For now, it's been a little awkward around our new roomates. Things such as going to the bathroom and stopping short because someone is in there... That's pretty much it, but its still unpleasant holding it in. Until the ash goes away they can't get back to Czechoslovakia.

I really hope that Kalta volcano next to the erupting Eyjafjallajokull Volcano doesn't get agitated. Or this new addition will be permanent.