My plants seem to have this fungus growing on the top of the soil. It
appears as a white powder in splotches around the soil. Here are pictures
to better explain:

http://joe.flintaero.com/gallery/fungus-among-us

I am also having problems with gnats, that I think hatched in the soil, and
are now flying all around the apartment. I have tried spraying soapy water
on the top of the soil, but no luck. Anyone know what caused these or how
to get rid of them?

Thanks!